HR job title
- Retired Professor
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- 1 979 845 9279
Johnson, Larry Professor
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Overview
Publications
selected publications
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academicarticle
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Waberski, D., Riesenbeck, A., Schulze, M., Weitze, K. F., & Johnson, L.
(2019).
Application of preserved boar semen for artificial insemination: Past, present and future challenges. THERIOGENOLOGY.
137, 2-7.
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Baker, B. L., McGregor, A., Johnson, L. G., & Taylor, M.
(2017).
Summer day camp attendance facilitates some children meeting physical activity recommendations: Differences by gender and weight status. Journal of Applied Biobehavioral Research.
22(4), e12097-e12097.
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Marazzo, D. P., Karabinus, D., Johnson, L. A., & Schulman, J. D.
(2016).
MicroSort sperm sorting causes no increase in major malformation rate. Reproduction, Fertility and Development.
28(10), 1580-1587.
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Rath, D., Tiedemann, D., Gamrad, L., Johnson, L. A., Klein, S., Kues, W., ... Barcikowski, S.
(2015).
Sex-Sorted Boar Sperm - An Update on Related Production Methods. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
50 Suppl 2, 56-60.
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Karabinus, D. S., Marazzo, D. P., Stern, H. J., Potter, D. A., Opanga, C. I., Cole, M. L., Johnson, L. A., & Schulman, J. D.
(2014).
The effectiveness of flow cytometric sorting of human sperm (MicroSort) for influencing a child's sex. Reproductive Biology and Endocrinology.
12(1), 106-106.
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Daray, L. A., Henagan, T. M., Zanovec, M., Earnest, C. P., Johnson, L. G., Winchester, J., Tuuri, G., & Stewart, L. K.
(2011).
Endurance and resistance training lowers C-reactive protein in young, healthy females. 36(5), 660-670.
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Johnson, L. A.
(2011).
International Conference on Boar Semen Preservation (ICBSP): the first 25 years. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
46 Suppl 2(SUPPL. 2), 35-38.
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Zanovec, M., Johnson, L. G., Marx, B. D., Keenan, M. J., & Tuuri, G.
(2009).
Self-reported physical activity improves prediction of body fatness in young adults. 41(2), 328-335.
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Rath, D., Moench-Tegeder, G., Taylor, U., & Johnson, L. A.
(2009).
Improved quality of sex-sorted sperm: a prerequisite for wider commercial application. THERIOGENOLOGY.
71(1), 22-29.
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Rath, D., & Johnson, L. A.
(2008).
Application and commercialization of flow cytometrically sex-sorted semen. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
43 Suppl 2(SUPPL.2), 338-346.
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Johnson, L., Thompson, D. L., & Varner, D. D.
(2008).
Role of Sertoli cell number and function on regulation of spermatogenesis. Animal Reproduction Science.
105(1-2), 23-51.
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Hernndez-Fonseca, H., Nava-Trujillo, H., Sirisathien, S., Johnson, L. A., Guthrie, D., Welch, G. R., Hernndez, A., & Brackett, B. G.
(2007).
Effect of db-cAMP on embryonic development of bovine oocytes fertilized with sex sorted semen. Revista CientÃfica.
17(2), 131-135.
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Acevedo, E. O., Kraemer, R. R., Kamimori, G. H., Durand, R. J., Johnson, L. G., & Castracane, V. D.
(2007).
Stress hormones, effort sense, and perceptions of stress during incremental exercise: an exploratory investigation. Journal of Strength and Conditioning Research.
21(1), 283-288.
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Degenhart, S. H., Wingenbach, G. J., Dooley, K. E., Lindner, J. R., Mowen, D. L., & Johnson, L.
(2007).
Middle school students attitudes toward pursuing careers in science, technology, engineering, and math. Nacta Journal.
52-59.
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Donnelly, C. L., Staub, C., Varner, D., Blanchard, T., Johnson, L., & Forrest, D. W.
(2007).
The effects of growth factor on testicular germ cell apoptosis in the stallion. Journal of Equine Veterinary Science.
27(5), 212-216.
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Lee, B., Pine, M., Johnson, L., Rettori, V., Hiney, J. K., & Dees, W. L.
(2006).
Manganese acts centrally to activate reproductive hormone secretion and pubertal development in male rats. Reproductive Toxicology.
22(4), 580-585.
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Froment, P., Staub, C., Hembert, S., Pisselet, C., Magistrini, M., Delaleu, B., ... Monget, P.
(2004).
Reproductive abnormalities in human insulin-like growth factor-binding protein-1 transgenic male mice. ENDOCRINOLOGY.
145(4), 2080-2091.
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Kraemer, R. R., Durand, R. J., Acevedo, E. O., Johnson, L. G., Kraemer, G. R., Hebert, E. P., & Castracane, V. D.
(2004).
Rigorous running increases growth hormone and insulin-like growth factor-I without altering ghrelin. Experimental Biology and Medicine.
229(3), 240-246.
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Heninger, N. L., Staub, C., Blanchard, T. L., Johnson, L., Varner, D. D., & Forrest, D. W.
(2004).
Germ cell apoptosis in the testes of normal stallions. THERIOGENOLOGY.
62(1-2), 283-297.
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Kraemer, R. R., Aboudehen, K. S., Carruth, A. K., Durand, R., Acevedo, E. O., Hebert, E. P., Johnson, L. G., & Castracane, V. D.
(2003).
Adiponectin responses to continuous and progressively intense intermittent exercise. Medicine & Science in Sports & Exercise.
35(8), 1320-1325.
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Kraemer, R. R., Durand, R. J., Acevedo, E. O., Johnson, L. G., Synovitz, L. B., Kraemer, G. R., Gimpel, T., & Castracane, V. D.
(2003).
Effects of high-intensity exercise on leptin and testosterone concentrations in well-trained males. Endocrine.
21(3), 261-265.
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Rubin, M. R., Kraemer, W. J., Kraemer, R. R., Durand, R. J., Acevedo, E. O., Johnson, L. G., ... Volek, J. S.
(2003).
Responses of growth hormone aggregates to different intermittent exercise intensities. European Journal of Applied Physiology.
89(2), 166-170.
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Johnson, L. G., Kraemer, R. R., Kraemer, G. R., Haltom, R. W., Cordill, A. E., Welsch, M. A., Durand, R. J., & Castracane, V. D.
(2002).
Substrate utilization during exercise in postmenopausal women on hormone replacement therapy. European Journal of Applied Physiology.
88(3), 282-287.
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Johnson, L., Staub, C., Silge, R. L., Harris, M. W., & Chapin, R. E.
(2002).
The pesticide methoxychlor given orally during the perinatal/juvenile period, reduced the spermatogenic potential of males as adults by reducing their Sertoli cell number. 42(6), 573-580.
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Fielden, M. R., Halgren, R. G., Fong, C. J., Staub, C., Johnson, L., Chou, K., & Zacharewski, T. R.
(2002).
Gestational and lactational exposure of male mice to diethylstilbestrol causes long-term effects on the testis, sperm fertilizing ability in vitro, and testicular gene expression. ENDOCRINOLOGY.
143(8), 3044-3059.
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Kraemer, R. R., Acevedo, E. O., Synovitz, L. B., Durand, R. J., Johnson, L. G., Petrella, E., ... Castracane, V. D.
(2002).
Glucoregulatory endocrine responses to intermittent exercise of different intensities: plasma changes in a pancreatic beta-cell peptide, amylin. Metabolism: Clinical and Experimental.
51(5), 657-663.
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Staub, C., Hardy, V. B., Chapin, R. E., Harris, M. W., & Johnson, L.
(2002).
The hidden effect of estrogenic/antiandrogenic methoxychlor on spermatogenesis. TOXICOLOGY AND APPLIED PHARMACOLOGY.
180(2), 129-135.
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Guthrie, H. D., Johnson, L. A., Garrett, W. M., Welch, G. R., & Dobrinsky, J. R.
(2002).
Flow cytometric sperm sorting: effects of varying laser power on embryo development in swine. Molecular Reproduction and Development.
61(1), 87-92.
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Johnson, L., Staub, C., Neaves, W. B., & Yanagimachi, R.
(2001).
Live human germ cells in the context of their spermatogenic stages. Human Reproduction.
16(8), 1575-1582.
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Rens, W., Yang, F., Welch, G., Revell, S., O'Brien, P. C., Solanky, N., Johnson, L. A., & Ferguson Smith, M. A.
(2001).
An X-Y paint set and sperm FISH protocol that can be used for validation of cattle sperm separation procedures. REPRODUCTION.
121(4), 541-546.
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Kraemer, R. R., Synovitz, L. B., Gimpel, T., Kraemer, G. R., Johnson, L. G., & Castracane, V. D.
(2001).
Effect of estrogen on serum DHEA in younger and older women and the relationship of DHEA to adiposity and gender. Metabolism: Clinical and Experimental.
50(4), 488-493.
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Blanchard, T. L., Johnson, L., Varner, D. D., Rigby, S. L., Brinsko, S. P., Love, C. C., & Miller, C.
(2001).
Low daily sperm output per ml of testis as a diagnostic criteria for testicular degeneration in stallions. Journal of Equine Veterinary Science.
21(1), 11-+.
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Johnson, L. A., Weitze, K. F., Fiser, P., & Maxwell, W. M.
(2000).
Erratum to "Storage of boar semen". Animal Reproduction Science.
64(1-2), 133-134.
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Johnson, L. A., Weitze, K. F., Fiser, P., & Maxwell, W. M.
(2000).
Storage of boar semen. Animal Reproduction Science.
62(1-3), 143-172.
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Johnson, L., Varner, D. D., Roberts, M. E., Smith, T. L., Keillor, G. E., & Scrutchfield, W. L.
(2000).
Efficiency of spermatogenesis: a comparative approach. Animal Reproduction Science.
60-61, 471-480.
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Silber, S. J., Johnson, L., Verheyen, G., & Van Steirteghem, A.
(2000).
Round spermatid injection. Fertility and Sterility.
73(5), 897-900.
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Blanchard, T. L., & Johnson, L.
(2000).
Increased germ cell loss rates and poor semen quality in stallions with idiopathic testicular degeneration. Journal of Equine Veterinary Science.
20(4), 263-265.
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Dobrinsky, J. R., Pursel, V. G., Long, C. R., & Johnson, L. A.
(2000).
Birth of piglets after transfer of embryos cryopreserved by cytoskeletal stabilization and vitrification. Biology of Reproduction.
62(3), 564-570.
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Varner, D. D., Blanchard, T. L., Brinsko, S. P., Love, C. C., Taylor, T. S., & Johnson, L.
(2000).
Techniques for evaluating selected reproductive disorders of stallions. Animal Reproduction Science.
60-61, 493-509.
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Johnson, L., Ing, N. H., Welsh, T. H., Varner, D. D., Scrutchfield, W. L., & Martin, M. T.
(2000).
Efficiency of spermatogenesis in animals and humans. Journal of Animal Science.
77(E-Suppl), 1-1.
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Blanchard, T., Varner, D., Johnson, L., Roser, J., Hill, J., & Miller, C.
(2000).
Testicular and hormonal changes in stallions with thermally induced testicular degeneration. Journal of reproduction and fertility. Supplement.
51-59.
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Beyhan, Z., Johnson, L. A., & First, N. L.
(1999).
Erratum. THERIOGENOLOGY.
52(6), 1115-1116.
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Johnson, L., Neaves, W. B., Barnard, J. J., Keillor, G. E., Brown, S. W., & Yanagimachi, R.
(1999).
A comparative morphological study of human germ cells in vitro or in situ within seminiferous tubules. Biology of Reproduction.
61(4), 927-934.
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Cerelli, J. S., & Johnson, L.
(1999).
Potential daily sperm production, Sertoli cell number, and seminiferous tubule characteristics in beef bulls fed conventional or gossypol-enriched diets. Journal of Andrology.
20(4), 519-528.
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Kraemer, R. R., Johnson, L. G., Haltom, R., Kraemer, G. R., Hebert, E. P., Gimpel, T., & Castracane, V. D.
(1999).
Serum leptin concentrations in response to acute exercise in postmenopausal women with and without hormone replacement therapy. Experimental Biology and Medicine.
221(3), 171-177.
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Beyhan, Z., Johnson, L. A., & First, N. L.
(1999).
Sexual dimorphism in IVM-IVF bovine embryos produced from X and Y chromosome-bearing spermatozoa sorted by high speed flow cytometry. THERIOGENOLOGY.
52(1), 35-48.
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Long, C. R., Dobrinsky, J. R., & Johnson, L. A.
(1999).
In vitro production of pig embryos: comparisons of culture media and boars. THERIOGENOLOGY.
51(7), 1375-1390.
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Johnson, L. A.
(1999).
Sexing of sperm. Biofutur.
36-40.
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Rath, D., Long, C. R., Dobrinsky, J. R., Welch, G. R., Schreier, L. L., & Johnson, L. A.
(1999).
In vitro production of sexed embryos for gender preselection: high-speed sorting of X-chromosome-bearing sperm to produce pigs after embryo transfer. Journal of Animal Science.
77(12), 3346-3352.
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Rens, W., Welch, G. R., & Johnson, L. A.
(1999).
Improved flow cytometric sorting of X and Ychromosome bearing sperm: Substantial increase in yield of sexed semen. Molecular Reproduction and Development.
52(1), 50-56.
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Johnson, L. A., Welch, G. R., & Rens, W.
(1999).
The Beltsville sperm sexing technology: high-speed sperm sorting gives improved sperm output for in vitro fertilization and AI. Journal of Animal Science.
77 Suppl 2(suppl_2), 213-220.
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Rens, W., Welch, G. R., & Johnson, L. A.
(1998).
A novel nozzle for more efficient sperm orientation to improve sorting efficiency of X and Y chromosome-bearing sperm. Cytometry.
33(4), 476-481.
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Adams, S. H., Esser, V., Brown, N. F., Ing, N. H., Johnson, L., Foster, D. W., & McGarry, J. D.
(1998).
Expression and possible role of muscle-type carnitine palmitoyltransferase I during sperm development in the rat. Biology of Reproduction.
59(6), 1399-1405.
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Maxwell, W. M., Long, C. R., Johnson, L. A., Dobrinsky, J. R., & Welch, G. R.
(1998).
The relationship between membrane status and fertility of boar spermatozoa after flow cytometric sorting in the presence or absence of seminal plasma. Reproduction, Fertility and Development.
10(5), 433-440.
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Abeydeera, L. R., Johnson, L. A., Welch, G. R., Wang, W. H., Boquest, A. C., Cantley, T. C., Rieke, A., & Day, B. N.
(1998).
Birth of piglets preselected for gender following in vitro fertilization of in vitro matured pig oocytes by X and Y chromosome bearing spermatozoa sorted by high speed flow cytometry. THERIOGENOLOGY.
50(7), 981-988.
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Varner, D. D., Scanlan, C. M., Thompson, J. A., Brumbaugh, G. W., Blanchard, T. L., Carlton, C. M., & Johnson, L.
(1998).
Bacteriology of preserved stallion semen and antibiotics in semen extenders. THERIOGENOLOGY.
50(4), 559-573.
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Long, C. R., Dobrinsky, J. R., Garrett, W. M., & Johnson, L. A.
(1998).
Dual labeling of the cytoskeleton and DNA strand breaks in porcine embryos produced in vivo and in vitro. Molecular Reproduction and Development.
51(1), 59-65.
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Cook, J. C., Johnson, L., O'Connor, J. C., Biegel, L. B., Krams, C. H., Frame, S. R., & Hurtt, M. E.
(1998).
Effects of dietary 17 beta-estradiol exposure on serum hormone concentrations and testicular parameters in male Crl:CD BR rats. Toxicological Sciences.
44(2), 155-168.
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Penfold, L. M., Holt, C., Holt, W. V., Welch, G. R., Cran, D. G., & Johnson, L. A.
(1998).
Comparative motility of X and Y chromosome-bearing bovine sperm separated on the basis of DNA content by flow sorting. Molecular Reproduction and Development.
50(3), 323-327.
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Johnson, L., Barnard, J. J., Rodriguez, L., Smith, E. C., Swerdloff, R. S., Wang, X. H., & Wang, C.
(1998).
Ethnic differences in testicular structure and spermatogenic potential may predispose testes of Asian men to a heightened sensitivity to steroidal contraceptives. 19(3), 348-357.
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Silber, S. J., & Johnson, L.
(1998).
Are spermatid injections of any clinical value? ROSNI and ROSI revisited. Round spermatid nucleus injection and round spermatid injection. Human Reproduction.
13(3), 509-515.
-
Johnson, L. G.
(1998).
Erratum. Fertility and Sterility.
69(3), 606-606.
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Kraemer, R. R., Johnson, L. G., Haltom, R., Kraemer, G. R., Gaines, H., Drapcho, M., Gimple, T., & Castracane, V. D.
(1998).
Effects of hormone replacement on growth hormone and prolactin exercise responses in postmenopausal women. Journal of applied physiology.
84(2), 703-708.
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Kawarasaki, T., Welch, G. R., Long, C. R., Yoshida, M., & Johnson, L. A.
(1998).
Verification of flow cytometorically-sorted X- and Y-bearing porcine spermatozoa and reanalysis of spermatozoa for DNA content using the fluorescence in situ hybridization (FISH) technique. THERIOGENOLOGY.
50(4), 625-635.
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Huszar, G., Patrizio, P., Vigue, L., Willets, M., Wilker, C., Adhoot, D., & Johnson, L.
(1998).
Cytoplasmic extrusion and the switch from creatine kinase B to M isoform are completed by the commencement of epididymal transport in human and stallion spermatozoa. Journal of Andrology.
19(1), 11-20.
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Hikim, A. P., Wang, C., Lue, Y., Johnson, L., Wang, X. H., & Swerdloff, R. S.
(1998).
Spontaneous germ cell apoptosis in humans: evidence for ethnic differences in the susceptibility of germ cells to programmed cell death. Journal of Clinical Endocrinology and Metabolism.
83(1), 152-156.
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Seidel, G. E., Allen, C. H., Johnson, L. A., Holland, M. D., Brink, Z., Welch, G. R., Graham, J. K., & Cattell, M. B.
(1997).
Uterine horn insemination of heifers with very low numbers of nonfrozen and sexed spermatozoa. THERIOGENOLOGY.
48(8), 1255-1264.
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Johnson, L. G., Kraemer, R. R., Haltom, R., Kraemer, G. R., Gaines, H. E., & Castracane, V. D.
(1997).
Effects of estrogen replacement therapy on dehydroepiandrosterone, dehydroepiandrosterone sulfate, and cortisol responses to exercise in postmenopausal women. Fertility and Sterility.
68(5), 836-843.
-
Johnson, L., Blanchard, T. L., Varner, D. D., & Scrutchfield, W. L.
(1997).
Factors affecting spermatogenesis in the stallion. THERIOGENOLOGY.
48(7), 1199-1216.
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Johnson, L., Falk, G. U., Suggs, L. C., Henderson, D. J., Spoede, G. E., Brown, S. W., ... Barnard, J. J.
(1997).
Heterotopic transplantation as a model to study the regulation of spermatogenesis; some histomorphological considerations about sperm decline in man. Contraception, fertilite, sexualite (1992).
25(7-8), 549-555.
-
Maxwell, W. M., & Johnson, L. A.
(1997).
Membrane status of boar spermatozoa after cooling or cryopreservation. THERIOGENOLOGY.
48(2), 209-219.
-
Maxwell, W. M., & Johnson, L. A.
(1997).
Chlortetracycline analysis of boar spermatozoa after incubation, flow cytometric sorting, cooling, or cryopreservation. 46(3), 408-418.
-
Rath, D., Johnson, L. A., Dobrinsky, J. R., Welch, G. R., & Niemann, H.
(1997).
Production of piglets preselected for sex following in vitro fertilization with X and Y chromosome-bearing spermatozoa sorted by flow cytometry. THERIOGENOLOGY.
47(4), 795-800.
-
Blanchard, T. L., & Johnson, L.
(1997).
Determination of daily sperm production in stallion testes by enumeration of germ cells in homogenates. THERIOGENOLOGY.
47(3), 655-664.
-
Blanchard, T. L., & Johnson, L.
(1997).
Increased germ cell degeneration and reduced germ cell:Sertoli cell ratio in stallions with low sperm production. THERIOGENOLOGY.
47(3), 665-677.
-
Johnson, L. A.
(1997).
Advances in gender preselection in swine. Journal of reproduction and fertility. Supplement.
52, 255-266.
-
Penfold, L. M., Garner, D. L., Donoghue, A. M., & Johnson, L. A.
(1997).
Comparative viability of bovine sperm frozen on a cryomicroscope or in straws. THERIOGENOLOGY.
47(2), 521-530.
-
Erkens, J., Johnson, L. A., & Van Der Lende, T.
(1996).
Acrosin inhibitor BSTI-I in seminal and/or blood plasma of male and female pigs under different reproductive conditions. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
31(4-5), 641-649.
-
Johnson, L. A.
(1996).
Gender preselection in mammals: an overview. Deutsche Tierärztliche Wochenschrift.
103(8-9), 288-291.
-
Hendriksen, P. J., Welch, G. R., Grootegoed, J. A., Van der Lende, T., & Johnson, L. A.
(1996).
Comparison of detergent-solubilized membrane and soluble proteins from flow cytometrically sorted X- and Y-chromosome bearing porcine spermatozoa by high resolution 2-D electrophoresis. Molecular Reproduction and Development.
45(3), 342-350.
-
Dobrinsky, J. R., Johnson, L. A., & Rath, D.
(1996).
Development of a culture medium (BECM-3) for porcine embryos: effects of bovine serum albumin and fetal bovine serum on embryo development. Biology of Reproduction.
55(5), 1069-1074.
-
Wilker, C., Johnson, L., & Safe, S.
(1996).
Effects of developmental exposure to indole-3-carbinol or 2,3,7,8-tetrachlorodibenzo-p-dioxin on reproductive potential of male rat offspring. TOXICOLOGY AND APPLIED PHARMACOLOGY.
141(1), 68-75.
-
Rens, W., Welch, G. R., Houck, D. W., van Oven, C. H., & Johnson, L. A.
(1996).
Slit-scan flow cytometry for consistent high resolution DNA analysis of X- and Y-chromosome bearing sperm. Cytometry.
25(2), 191-199.
-
Bartke, A., Cecim, M., Johnson, L., Meliska, C. J., & Milton, S.
(1996).
Direct and centrally-mediated effects of growth hormone on reproduction. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
31(3), 397-402.
-
Donoghue, A. M., Garner, D. L., Donoghue, D. J., & Johnson, L. A.
(1996).
Assessment of the membrane integrity of fresh and stored turkey spermatozoa using a combination of hypo-osmotic stress fluorescent staining and flow cytometry. THERIOGENOLOGY.
46(1), 153-163.
-
Cran, D. G., & Johnson, L. A.
(1996).
The predetermination of embryonic sex using flow cytometrically separated X and Y spermatozoa. Human Reproduction Update.
2(4), 355-363.
-
Okwun, O. E., Igboeli, G., Lunstra, D. D., Ford, J. J., & Johnson, L.
(1996).
Testicular composition, number of A spermatogonia, germ cell ratios, and number of spermatids in three different breeds of boars. Journal of Andrology.
17(3), 301-309.
-
McNutt, T. L., & Johnson, L. A.
(1996).
Electrophoretic Gel Analysis of Hoechst 33342 Stained and Flow Cytometrically Sorted Bovine Sperm Membrane Proteins. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
31(3), 703-709.
-
Hellsten, Y., Hansson, H. A., Johnson, L., Frandsen, U., & Sjdin, B.
(1996).
Increased expression of xanthine oxidase and insulin-like growth factor I (IGF-I) immunoreactivity in skeletal muscle after strenuous exercise in humans. 157(2), 191-197.
-
Johnson, L., Suggs, L. C., Norton, Y. M., & Zeh, W. C.
(1996).
Effect of developmental age or time after transplantation on Sertoli cell number and testicular size in inbred Fischer rats. Biology of Reproduction.
54(5), 948-959.
-
Johnson, L., Suggs, L. C., Norton, Y. M., Welsh, T. H., & Wilker, C. E.
(1996).
Effect of hypophysectomy, sex of host, and/or number of transplanted testes on Sertoli cell number and testicular size of syngeneic testicular grafts in Fischer rats. Biology of Reproduction.
54(5), 960-969.
-
Okwun, O. E., Igboeli, G., Ford, J. J., Lunstra, D. D., & Johnson, L.
(1996).
Number and function of Sertoli cells, number and yield of spermatogonia, and daily sperm production in three breeds of boar. Reproduction.
107(1), 137-149.
-
Garner, D. L., Johnson, L. A., Allen, C. H., Palencia, D. D., & Chambers, C. S.
(1996).
Comparison of seminal quality in Holstein bulls as yearlings and as mature sires. THERIOGENOLOGY.
45(5), 923-934.
-
Johnson, L., Mckenzie, K. S., & Snell, J. R.
(1996).
Partial wave in human seminiferous tubules appears to be a random occurrence. Tissue and Cell.
28(2), 127-136.
-
Garner, D. L., Dobrinsky, J. R., Welch, G. R., & Johnson, L. A.
(1996).
Porcine sperm viability, oocyte fertilization and embryo development after staining spermatozoa with SYBR-14. THERIOGENOLOGY.
45(6), 1103-1113.
-
Durrant, B. S., Oosterhuis, J. E., Johnson, L., Plotka, E. D., Harms, P. G., & Welsh, T. H.
(1996).
Effect of testosterone treatment on the antler cycle of an Indian hog deer (Cervus porcinus) with low endogenous level of testosterone. Journal of Zoo and Wildlife Medicine.
27(1), 76-82.
-
McNutt, T. L., & Johnson, L. A.
(1996).
Flow cytometric sorting of sperm: influence on fertilization and embryo/fetal development in the rabbit. Molecular Reproduction and Development.
43(2), 261-267.
-
Rens, W., Welch, G. R., Houck, D. W., Oven, C. H., & Johnson, L. A.
(1996).
Erratum: Slit-scan flow cytometry for consistent high resolution DNA analysis of X- and Y-chromosome bearing sperm (Cytometry (1996) Vol. 25 (pp. 191-199)). Cytometry.
25(4), 403.
-
Gillespie, J. C., Jaeger, L. A., Johnson, L., & Welsh, J.
(1996).
Transforming growth factor alpha (TGF) in testicular development of the prepubertal boar. Molecular Andrology.
8(3-4), 259-271.
-
Nolan, C. J., Blackwell, J. L., French, J. T., Gardner, F. C., Knabe, D. A., Randel, R. D., ... Welsh, J.
(1996).
Use of neonatal porcine testis to study gonadotropin and growth factor control of steroidogenesis. Molecular Andrology.
8(3-4), 272-287.
-
Welch, G. R., Waldbieser, G. C., Wall, R. J., & Johnson, L. A.
(1995).
Flow cytometric sperm sorting and PCR to confirm separation of X and Ychromosome bearing bovine sperm. Animal Biotechnology.
6(2), 131-139.
-
Johnson, L. A., Maxwell, W., Dobrinsky, J. R., & Welch, G. R.
(1995).
STAINING SPERM FOR VIABILITY ASSESSMENT. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
31(1), 37-47.
-
Garner, D. L., & Johnson, L. A.
(1995).
Viability assessment of mammalian sperm using SYBR-14 and propidium iodide. Biology of Reproduction.
53(2), 276-284.
-
Donoghue, A. M., Garner, D. L., Donoghue, D. J., & Johnson, L. A.
(1995).
Viability assessment of turkey sperm using fluorescent staining and flow cytometry. 74(7), 1191-1200.
-
Clemmons, A. J., Thompson, D. L., & Johnson, L.
(1995).
Local initiation of spermatogenesis in the horse. Biology of Reproduction.
52(6), 1258-1267.
-
Cran, D. G., Johnson, L. A., & Polge, C.
(1995).
Sex preselection in cattle: a field trial. Veterinary Record.
136(19), 495-496.
-
Guthrie, H. D., Cooper, B. S., Welch, G. R., Zakaria, A. D., & Johnson, L. A.
(1995).
Atresia in follicles grown after ovulation in the pig: measurement of increased apoptosis in granulosa cells and reduced follicular fluid estradiol-17 beta. Biology of Reproduction.
52(4), 920-927.
-
Wilker, C. E., Welsh, T. H., Safe, S. H., Narasimhan, T. R., & Johnson, L.
(1995).
Human chorionic gonadotropin protects Leydig cell function against 2,3,7,8-tetrachlorodibenzo-p-dioxin in adult rats: role of Leydig cell cytoplasmic volume. Toxicology.
95(1-3), 93-102.
-
Johnson, L. A.
(1995).
Sex preselection by flow cytometric separation of X and Y chromosome-bearing sperm based on DNA difference: a review. Reproduction, Fertility and Development.
7(4), 893-903.
-
Rath, D., Niemann, H., & Johnson, L. A.
(1994).
Gamete Intrafallopian Transfer (GIFT), an alternative to in vitro Fertilization Procedures for Special Applications. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
29(4), 349-350.
-
Guthrie, H. D., Welch, G. R., Cooper, B. S., Zakaria, A. D., & Johnson, L. A.
(1994).
Flow cytometric determination of degraded deoxyribonucleic acid in granulosa cells to identify atretic follicles during preovulatory maturation in the pig. Biology of Reproduction.
50(6), 1303-1311.
-
Johnson, L. A., & Schulman, J. D.
(1994).
The safety of sperm selection by flow cytometry. Human Reproduction.
9(5), 758-759.
-
Johnson, L., Wilker, C. E., Safe, S. H., Scott, B., Dean, D. D., & White, P. H.
(1994).
2,3,7,8-Tetrachlorodibenzo-p-dioxin reduces the number, size, and organelle content of Leydig cells in adult rat testes. Toxicology.
89(1), 49-65.
-
Johnson, L.
(1994).
A new approach to study the architectural arrangement of spermatogenic stages revealed little evidence of a partial wave along the length of human seminiferous tubules. Journal of Andrology.
15(5), 435-441.
-
Dobrinsky, J. R., & Johnson, L. A.
(1994).
Cryopreservation of porcine embryos by vitrification: A study of in vitro development. THERIOGENOLOGY.
42(1), 25-35.
-
Garner, D. L., Johnson, L. A., Yue, S. T., Roth, B. L., & Haugland, R. P.
(1994).
Dual DNA staining assessment of bovine sperm viability using SYBR-14 and propidium iodide. Journal of Andrology.
15(6), 620-629.
-
Johnson, L. A., Cran, D. G., & Polge, C.
(1994).
Recent advances in sex preselection of cattle: Flow cytometric sorting of X- & Y-chromosome bearing sperm based on dna to produce progeny. THERIOGENOLOGY.
41(1), 51-56.
-
Rath, D., Johnson, L. A., Welch, G. R., & Niemann, H.
(1994).
Successful gamete intrafallopian transfer (GIFT) in the porcine. THERIOGENOLOGY.
41(5), 1173-1179.
-
Johnson, L., Carter, G. K., Varner, D. D., Taylor, T. S., Blanchard, T. L., & Rembert, M. S.
(1994).
The relationship of daily sperm production with number of Sertoli cells and testicular size in adult horses: role of primitive spermatogonia. Reproduction.
100(1), 315-321.
-
Varner, D. D., Bowen, J. A., & Johnson, L.
(1993).
Effect of heparin on capacitation/acrosome reaction of equine sperm. Systems Biology in Reproductive Medicine.
31(3), 199-207.
-
Johnson, L. A., Welch, G. R., Keyvanfar, K., Dorfmann, A., Fugger, E. F., & Schulman, J. D.
(1993).
Gender preselection in humans? Flow cytometric separation of X and Y spermatozoa for the prevention of X-linked diseases. Human Reproduction.
8(10), 1733-1739.
-
Chaturvedi, P. K., & Johnson, L.
(1993).
Architectural arrangement of stages of the spermatogenic cycle within human seminiferous tubules is related to efficiency of spermatogenesis. Cell and Tissue Research.
273(1), 65-70.
-
Hendriksen, P. J., Tieman, M., Van der Lende, T., & Johnson, L. A.
(1993).
Binding of anti-H-Y monoclonal antibodies to separated X and Y chromosome-bearing porcine and bovine sperm. Molecular Reproduction and Development.
35(2), 189-196.
-
VARNER, D. D., BOWEN, J. A., & JOHNSON, L.
(1993).
EFFECT OF HEPARIN ON CAPACITATION/ACROSOME REACTION OF EQUINE SPERM. Systems Biology in Reproductive Medicine.
31(3), 199-207.
-
Cran, D. G., Johnson, L. A., Miller, N. G., Cochrane, D., & Polge, C.
(1993).
Production of bovine calves following separation of X- and Y-chromosome bearing sperm and in vitro fertilisation. Veterinary Record.
132(2), 40-41.
-
Johnson, L., Chaturvedi, P. K., & Williams, J. D.
(1992).
Missing generations of spermatocytes and spermatids in seminiferous epithelium contribute to low efficiency of spermatogenesis in humans. Biology of Reproduction.
47(6), 1091-1098.
-
Johnson, L., Dickerson, R., Safe, S. H., Nyberg, C. L., Lewis, R. P., & Welsh, T. H.
(1992).
Reduced Leydig cell volume and function in adult rats exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin without a significant effect on spermatogenesis. Toxicology.
76(2), 103-118.
-
Silvia, P. J., Johnson, L., & Fitzgerald, B. P.
(1992).
Changes in the hypothalamic-hypophyseal axis of mares in relation to the winter solstice. Reproduction.
96(1), 195-202.
-
Brinsko, S. P., Varner, D. D., Blanchard, T. L., Relford, R. L., & Johnson, L.
(1992).
Bilateral infectious epididymitis in a stallion. Equine Veterinary Journal.
24(4), 325-328.
-
JOHNSON, L., MAY, M. R., BUSBEE, D. L., & WILLIAMS, J. D.
(1992).
EFFECT OF AGE AND DIETARY RESTRICTION ON DAILY SPERM PRODUCTION AND NUMBER AND TRANSIT-TIME OF EPIDIDYMAL SPERMATOZOA IN THE MOUSE. AGE.
15(3), 65-71.
-
Foote, R. H., Hough, S. R., Johnson, L. A., & Kaproth, M.
(1992).
Electron microscopy and pedigree study in an Ayrshire bull with tail-stump sperm defects. Veterinary Record.
130(26), 578-579.
-
Bartke, A., Naar, E. M., Johnson, L., May, M. R., Cecim, M., Yun, J. S., & Wagner, T. E.
(1992).
Effects of expression of human or bovine growth hormone genes on sperm production and male reproductive performance in four lines of transgenic mice. Reproduction.
95(1), 109-118.
-
Varner, D. D., Bowen, J. A., & Johnson, L.
(1992).
Capacitation and acrosome reaction of equine spermatozoa by heparin. 4(1-2), 81-99.
-
Fenner, G. P., Johnson, L. A., Hruschka, W. R., & Bolt, D. J.
(1992).
Two-dimensional electrophoresis and densitometric analysis of solubilized bovine sperm plasma membrane proteins detected by silver staining and radioiodination. Systems Biology in Reproductive Medicine.
29(1), 21-32.
-
Johnson, L. A.
(1991).
Sex Preselection in Swine: Altered Sex Ratios in Offspring following Surgical Insemination of Flow Sorted X and YBearing Sperm. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
26(6), 309-314.
-
Johnson, L., Varner, D. D., Tatum, M. E., & Scrutchfield, W. L.
(1991).
Season but not age affects Sertoli cell number in adult stallions. Biology of Reproduction.
45(3), 404-410.
-
Johnson, L., & Bartke, A.
(1991).
Effect of photoperiod on the rate of 3H-thymidine incorporation of epididymal principal cells in adult Syrian hamsters. Journal of Experimental Zoology.
258(1), 89-94.
-
Johnson, L.
(1991).
Seasonal differences in equine spermatocytogenesis. Biology of Reproduction.
44(2), 284-291.
-
Varner, D. D., Vaughan, S. D., & Johnson, L.
(1991).
Use of a computerized system for evaluation of equine spermatozoal motility. American Journal of Veterinary Research.
52(2), 224-230.
-
Benfey, T. J., Donaldson, E. M., & Johnson, L. A.
(1991).
Inability of Flow Cytometry to Distinguish X from YChromosomeBearing Spermatozoa of Chinook Salmon. Progressive Fish-Culturist.
53(1), 36-40.
-
Johnson, L. A., & Clarke, R. N.
(1990).
Sperm DNA and sex chromosome differences between two geographical populations of the creeping vole, Microtus oregoni. Molecular Reproduction and Development.
27(2), 159-162.
-
Johnson, L., Kattan-Said, A. F., Hardy, V. B., & Scrutchfield, W. L.
(1990).
Isolation and staging of horse seminiferous tubules by transillumination. Reproduction.
89(2), 689-696.
-
Ericsson, S. A., Garner, D. L., Johnson, L. A., Redelman, D., & Ahmad, K.
(1990).
Flow cytometric evaluation of cryopreserved bovine spermatozoa processed using a new antibiotic combination. THERIOGENOLOGY.
33(6), 1211-1220.
-
Johnson, L., Hardy, V. B., & Martin, M. T.
(1990).
Staging equine seminiferous tubules by Nomarski optics in unstained histologic sections and in tubules mounted in toto to reveal the spermatogenic wave. Anatomical Record.
227(2), 167-174.
-
Johnson, L., Grumbles, J. S., Bagheri, A., & Petty, C. S.
(1990).
Increased germ cell degeneration during postprophase of meiosis is related to increased serum follicle-stimulating hormone concentrations and reduced daily sperm production in aged men. Biology of Reproduction.
42(2), 281-287.
-
Johnson, L., Grumbles, J. S., Chastain, S., Goss, H. F., & Petty, C. S.
(1990).
Leydig cell cytoplasmic content is related to daily sperm production in men. Journal of Andrology.
11(2), 155-160.
-
George, F. W., Johnson, L., & Wilson, J. D.
(1989).
The effect of a 5 alpha-reductase inhibitor on androgen physiology in the immature male rat. ENDOCRINOLOGY.
125(5), 2434-2438.
-
Johnson, L. A., Flook, J. P., & Hawk, H. W.
(1989).
Sex preselection in rabbits: live births from X and Y sperm separated by DNA and cell sorting. Biology of Reproduction.
41(2), 199-203.
-
Johnson, L., & Tatum, M. E.
(1989).
Temporal appearance of seasonal changes in numbers of Sertoli cells, Leydig cells, and germ cells in stallions. Biology of Reproduction.
40(5), 994-999.
-
Almlid, T., Clarke, R. N., Pursel, V. G., & Johnson, L. A.
(1989).
Effectiveness of in vitro Methods for Predicting in vivo Fertilizing Capacity of Boar Spermatozoa Cryopresemed with 2% or 4% Glycerol1. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
24(1), 8-15.
-
Blanchard, T. L., Varner, D. D., Brinsko, S. P., Meyers, S. A., & Johnson, L.
(1989).
Effects of postparturient uterine lavage on uterine involution in the mare. THERIOGENOLOGY.
32(4), 527-535.
-
Johnson, L.
(1989).
Evaluation of the human testis and its age-related dysfunction. Progress in clinical and biological research.
302, 35-60.
-
Johnson, L. A., & Clarke, R. N.
(1988).
Flow sorting of X and Y chromosome-bearing mammalian sperm: activation and pronuclear development of sorted bull, boar, and ram sperm microinjected into hamster oocytes. Gamete research.
21(4), 335-343.
-
Johnson, L., & Varner, D. D.
(1988).
Effect of daily spermatozoan production but not age on transit time of spermatozoa through the human epididymis. Biology of Reproduction.
39(4), 812-817.
-
Almlid, T., & Johnson, L. A.
(1988).
Effects of glycerol concentration, equilibration time and temperature of glycerol addition on post-thaw viability of boar spermatozoa frozen in straws. Journal of Animal Science.
66(11), 2899-2905.
-
Clarke, R. N., & Johnson, L. A.
(1988).
Factors related to successful sperm microinjection of hamster eggs: The effect of sperm species, technical experience, needle dimensions, and incubation medium on egg viability and sperm decondensation following microinjection. THERIOGENOLOGY.
30(3), 447-460.
-
Garner, D. L., Johnson, L. A., & Allen, C. H.
(1988).
Fluorometric evaluation of cryopreserved bovine spermatozoa extended in egg yolk and milk. THERIOGENOLOGY.
30(2), 369-378.
-
Johnson, L., Abdo, J. G., Petty, C. S., & Neaves, W. B.
(1988).
Effect of age on the composition of seminiferous tubular boundary tissue and on the volume of each component in humans. Fertility and Sterility.
49(6), 1045-1051.
-
Johnson, L. A., Aalbers, J. G., & Grooten, H. G.
(1988).
Artificial Insemination of Swine: Fecundity of Boar Semen Stored in Beltsville TS (BTS), Modified Modena (MM), or MRA and Inseminated on One, Three and Four Days After Collection12. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
23(2), 49-55.
-
Upreti, G. C., Riches, P. C., & Johnson, L. A.
(1988).
Attempted sexing of bovine spermatozoa by fractionation on a Percoll density gradient. Gamete research.
20(1), 83-92.
-
Libbus, B. L., & Johnson, L. A.
(1988).
The creeping vole, Microtus oregoni: karyotype and sex-chromosome differences between two geographical populations. Cytogenetic and Genome Research.
47(4), 181-184.
-
Johnson, L., Matt, K. S., Bartke, A., Nguyen, H. B., & Le, H. T.
(1987).
Effect of photoperiod on the size of the Leydig cell population and the rate of recruitment of Leydig cells in adult Syrian hamsters. Biology of Reproduction.
37(3), 727-738.
-
Almlid, T., Stavne, S. E., & Johnson, L. A.
(1987).
Fertility evaluation of the straw freezing technique for boar semen under practical artificial insemination conditions. Reproduction in Domestic Animals: physiology, pathology, biotechnology.
22(4), 193-202.
-
Libbus, B. L., Perreault, S. D., Johnson, L. A., & Pinkel, D.
(1987).
Incidence of chromosome aberrations in mammalian sperm stained with Hoechst 33342 and UV-laser irradiated during flow sorting. MUTATION RESEARCH-FUNDAMENTAL AND MOLECULAR MECHANISMS OF MUTAGENESIS.
182(5), 265-274.
-
Johnson, L., Nguyen, H. B., Petty, C. S., & Neaves, W. B.
(1987).
Quantification of human spermatogenesis: germ cell degeneration during spermatocytogenesis and meiosis in testes from younger and older adult men. Biology of Reproduction.
37(3), 739-747.
-
Johnson, L., & Thompson, D. L.
(1987).
Effect of seasonal changes in Leydig cell number on the volume of smooth endoplasmic reticulum in Leydig cells and intratesticular testosterone content in stallions. Reproduction.
81(1), 227-232.
-
McConnell, J. D., Stone, D. K., Johnson, L., & Wilson, J. D.
(1987).
Partial purification and characterization of dynein adenosine triphosphatase from bovine sperm. Biology of Reproduction.
37(2), 385-393.
-
Johnson, L. A., Flook, J. P., & Look, M. V.
(1987).
Flow cytometry of X and Y chromosome-bearing sperm for DNA using an improved preparation method and staining with Hoechst 33342. Gamete research.
17(3), 203-212.
-
Clarke, R. N., & Johnson, L. A.
(1987).
Effect of liquid storage and cryopreservation of boar spermatozoa on acrosomal integrity and the penetration of zona-free hamster ova in vitro. Gamete research.
16(3), 193-204.
-
Neaves, W. B., Johnson, L., & Petty, C. S.
(1987).
Seminiferous tubules and daily sperm production in older adult men with varied numbers of Leydig cells. Biology of Reproduction.
36(2), 301-308.
-
Lebovitz, R. M., & Johnson, L.
(1987).
Acute, whole-body microwave exposure and testicular function of rats. Bioelectromagnetics.
8(1), 37-43.
-
Thompson, D. L., & Johnson, L.
(1987).
Effects of age, season and active immunization against estrogen on serum prolactin concentrations in stallions. Domestic Animal Endocrinology.
4(1), 17-22.
-
Thompson, D. L., Johnson, L., & Wiest, J. J.
(1987).
Effects of month and age on prolactin concentrations in stallion serum. Journal of reproduction and fertility. Supplement.
35, 67-70.
-
Lebovitz, R. M., Johnson, L., & Samson, W. K.
(1987).
Effects of pulse-modulated microwave radiation and conventional heating on sperm production. Journal of applied physiology.
62(1), 245-252.
-
Johnson, L. A., Flook, J. P., Look, M. V., & Pinkel, D.
(1987).
Flow sorting of X and Y chromosome-bearing spermatozoa into two populations. Gamete research.
16(1), 1-9.
-
Johnson, L., George, F. W., Neaves, W. B., Rosenthal, I. M., Christensen, R. A., Decristoforo, A., ... Griffin, J. E.
(1986).
Characterization of the testicular abnormality in 5 alpha-reductase deficiency. Journal of Clinical Endocrinology and Metabolism.
63(5), 1091-1099.
-
Johnson, L., & Thompson, D. L.
(1986).
Seasonal variation in the total volume of Leydig cells in stallions is explained by variation in cell number rather than cell size. Biology of Reproduction.
35(4), 971-979.
-
Johnson, L.
(1986).
Spermatogenesis and aging in the human. Journal of Andrology.
7(6), 331-354.
-
Johnson, L., Petty, C. S., & Neaves, W. B.
(1986).
Age-related variation in seminiferous tubules in men. A stereologic evaluation. Journal of Andrology.
7(5), 316-322.
-
Thompson, D. L., Johnson, L., St George, R. L., & Garza, F.
(1986).
Concentrations of prolactin, luteinizing hormone and follicle stimulating hormone in pituitary and serum of horses: effect of sex, season and reproductive state. Journal of Animal Science.
63(3), 854-860.
-
Johnson, L. A., & Pinkel, D.
(1986).
Modification of a laser-based flow cytometer for high-resolution DNA analysis of mammalian spermatozoa. Cytometry.
7(3), 268-273.
-
Johnson, L.
(1986).
A new approach to quantification of Sertoli cells that avoids problems associated with the irregular nuclear surface. Anatomical Record.
214(3), 231-237.
-
Lunney, J. K., Urban, J. F., & Johnson, L. A.
(1986).
Protective immunity to Ascaris suum: analysis of swine peripheral blood cell subsets using monoclonal antibodies and flow cytometry. Veterinary Parasitology.
20(1-3), 117-131.
-
Garner, D. L., Pinkel, D., Johnson, L. A., & Pace, M. M.
(1986).
Assessment of spermatozoal function using dual fluorescent staining and flow cytometric analyses. Biology of Reproduction.
34(1), 127-138.
-
Johnson, L., & Nguyen, H. B.
(1986).
Annual cycle of the Sertoli cell population in adult stallions. Reproduction.
76(1), 311-316.
-
Neaves, W. B., Johnson, L., & Petty, C. S.
(1985).
Age-related change in numbers of other interstitial cells in testes of adult men: evidence bearing on the fate of Leydig cells lost with increasing age. Biology of Reproduction.
33(1), 259-269.
-
Arriola, J., Johnson, L. A., Kaproth, M., & Foote, R. H.
(1985).
A specific oligoteratozoospermia in a bull: The sperm tail stump defect. THERIOGENOLOGY.
23(6), 899-913.
-
Bartke, A., Sweeney, C. A., Johnson, L., Castracane, V. D., & Doherty, P. C.
(1985).
Hyperprolactinemia inhibits development of Leydig cell tumors in aging Fischer rats. Experimental Aging Research.
11(2), 123-127.
-
Johnson, L.
(1985).
Increased daily sperm production in the breeding season of stallions is explained by an elevated population of spermatogonia. Biology of Reproduction.
32(5), 1181-1190.
-
Pinkel, D., Garner, D. L., Gledhill, B. L., Lake, S., Stephenson, D., & Johnson, L. A.
(1985).
Flow cytometric determination of the proportions of X- and Y-chromosome-bearing sperm in samples of purportedly separated bull sperm. Journal of Animal Science.
60(5), 1303-1307.
-
Johnson, L. A., & Hurtgen, J. P.
(1985).
The morphological and ultrastructural appearance of the crater defect in stallion spermatozoa. Molecular Reproduction and Development.
12(1), 41-46.
-
NEAVES, W. B., JOHNSON, L., PORTER, J. C., PARKER, C. R., & PETTY, C. S.
(1984).
Leydig Cell Cytoplasmic Mass, Daily Sperm Production, and Serum Gonadotropin Levels in Aging Men a. Annals of the New York Academy of Sciences.
438(1), 490-491.
-
Johnson, L., Petty, C. S., Porter, J. C., & Neaves, W. B.
(1984).
Germ cell degeneration during postprophase of meiosis and serum concentrations of gonadotropins in young adult and older adult men. Biology of Reproduction.
31(4), 779-784.
-
Johnson, L., Zane, R. S., Petty, C. S., & Neaves, W. B.
(1984).
Quantification of the human Sertoli cell population: its distribution, relation to germ cell numbers, and age-related decline. Biology of Reproduction.
31(4), 785-795.
-
Neaves, W. B., Johnson, L., Porter, J. C., Parker, C. R., & Petty, C. S.
(1984).
Leydig cell numbers, daily sperm production, and serum gonadotropin levels in aging men. Journal of Clinical Endocrinology and Metabolism.
59(4), 756-763.
-
Johnson, L., Lebovitz, R. M., & Samson, W. K.
(1984).
Germ cell degeneration in normal and microwave-irradiated rats: potential sperm production rates at different developmental steps in spermatogenesis. Anatomical Record.
209(4), 501-507.
-
Johnson, L., Petty, C. S., & Neaves, W. B.
(1984).
Influence of age on sperm production and testicular weights in men. Reproduction.
70(1), 211-218.
-
Garner, D. L., Johnson, L. A., Lake, S., Chaney, N., Stephenson, D., Pinkel, D., & Gledhill, B. L.
(1984).
Morphological and ultrastructural characterization of mammalian spermatozoa processed for flow cytometric DNA analyses. Molecular Reproduction and Development.
10(4), 339-351.
-
Johnson, L., & Thompson, D. L.
(1983).
Age-related and seasonal variation in the Sertoli cell population, daily sperm production and serum concentrations of follicle-stimulating hormone, luteinizing hormone and testosterone in stallions. Biology of Reproduction.
29(3), 777-789.
-
Johnson, L., Petty, C. S., & Neaves, W. B.
(1983).
Further quantification of human spermatogenesis: germ cell loss during postprophase of meiosis and its relationship to daily sperm production. Biology of Reproduction.
29(1), 207-215.
-
Johnson, L. A., Garner, D. L., Truitt-Gilbert, A. J., & Lessley, B. A.
(1983).
Immunocytochemical localization of acrosin on both acrosomal membranes and in the acrosomal matrix of porcine spermatozoa. Journal of Andrology.
4(3), 222-229.
-
Johnson, L., & Neaves, W. B.
(1983).
Enhanced daily sperm production in the remaining testis of aged rats following hemicastration. Journal of Andrology.
4(2), 162-166.
-
Garner, D. L., Gledhill, B. L., Pinkel, D., Lake, S., Stephenson, D., Van Dilla, M. A., & Johnson, L. A.
(1983).
Quantification of the X- and Y-chromosome-bearing spermatozoa of domestic animals by flow cytometry. Biology of Reproduction.
28(2), 312-321.
-
Lebovitz, R. M., & Johnson, L.
(1983).
Testicular function of rats following exposure to microwave radiation. Bioelectromagnetics.
4(2), 107-114.
-
Hurtgen, J. P., & Johnson, L. A.
(1982).
Fertility of stallions with abnormalities of the sperm acrosome. Journal of reproduction and fertility. Supplement.
32, 15-20.
-
Johnson, L.
(1982).
A re-evaluation of daily sperm output of men. Fertility and Sterility.
37(6), 811-816.
-
Johnson, L. A., & TruittGibert, A. J.
(1982).
INCIDENCE AND ULTRASTRUCTURE OF ABNORMALITIES IN PORCINE SPERMATOZOA. Annals of the New York Academy of Sciences.
383(1), 466-468.
-
Johnson, L., & Neaves, W. B.
(1982).
RAPID DETERMINATION OF CELL NUMBERS IN THE HUMAN TESTIS BY PHASECONTRAST CYTOMETRY: A NEW TECHNIQUE FOR ESTIMATING RATES OF SPERM PRODUCTION AND GERMINAL CELL ATTRITION AND FOR ASSESSING ABSOLUTE ABUNDANCE OF SERTOLI CELLS. Annals of the New York Academy of Sciences.
383(1), 464-465.
-
Johnson, L. A., Aalbers, J. G., & Arts, J. A.
(1982).
Use of boar spermatozoa for artificial insemination. II. Fertilizing capacity of fresh and frozen spermatozoa in gilts inseminated either at a fixed time or according to Walsmeta readings. Journal of Animal Science.
54(1), 126-131.
-
Johnson, L. A., Aalbers, J. G., Willems, C. M., Rademaker, J. H., & Rexroad, C. E.
(1982).
Use of boar spermatozoa for artificial insemination. III. Fecundity of boar spermatozoa stored in Beltsville liquid and Kiev extenders for three days at 18 C. Journal of Animal Science.
54(1), 132-136.
-
Johnson, L., Petty, C. S., & Neaves, W. B.
(1981).
A new approach to quantification of spermatogenesis and its application to germinal cell attrition during human spermiogenesis. Biology of Reproduction.
25(1), 217-226.
-
Johnson, L. A., Aalbers, J. G., Willems, C. M., & Sybesma, W.
(1981).
Use of spermatozoa for artificial insemination. I. Fertilizing capacity of fresh and frozen spermatozoa in sows on 36 farms. Journal of Animal Science.
52(5), 1130-1136.
-
Johnson, L., & Neaves, W. B.
(1981).
Age-related changes in the Leydig cell population, seminiferous tubules, and sperm production in stallions. Biology of Reproduction.
24(3), 703-712.
-
Johnson, L., Amann, R. P., & Pickett, B. W.
(1980).
Maturation of equine epididymal spermatozoa. American Journal of Veterinary Research.
41(8), 1190-1196.
-
Johnson, L., Petty, C. S., & Neaves, W. B.
(1980).
The relationship of biopsy evaluations and testicular measurements to over-all daily sperm production in human testes. Fertility and Sterility.
34(1), 36-40.
-
Johnson, L., Petty, C. S., & Neaves, W. B.
(1980).
A comparative study of daily sperm production and testicular composition in humans and rats. Biology of Reproduction.
22(5), 1233-1243.
-
TruittGibert, A. J., & Johnson, L. A.
(1980).
The crater defect in boar spermatozoa: A correlative study with transmission electron microscopy, scanning electron microscopy, and light microscopy. Molecular Reproduction and Development.
3(3), 259-266.
-
Johnson, L., Amann, R. P., & Pikett, B. W.
(1978).
Scanning electron microscopy of the epithelium and spermatozoa in the equine excurrent duct system. American Journal of Veterinary Research.
39(9), 1428-1434.
-
Pursel, V. G., Schulman, L. L., & Johnson, L. A.
(1978).
Distribution and morphology of fresh and frozen-thawed sperm in the reproductive tract of gilts after artificial insemination. Biology of Reproduction.
19(1), 69-76.
-
Pursel, V. G., Schulman, L. L., & Johnson, L. A.
(1978).
Effect of Orvus ES Paste on acrosome morphology, motility and fertilizing capacity of frozen-thawed boar sperm. Journal of Animal Science.
47(1), 198-202.
-
Pursel, V. G., Schulman, L. L., & Johnson, L. A.
(1978).
Effect of glycerol concentration on frozen boar sperm. THERIOGENOLOGY.
9(4), 305-312.
-
Johnson, L., Amann, R. P., & Pickett, B. W.
(1978).
Scanning electrons and light microscopy of the equine seminiferous tubule. Fertility and Sterility.
29(2), 208-215.
-
Richmond, J. Y., McVicar, J. W., Eisner, R. J., Johnson, L. A., & Pursel, V. G.
(1977).
Diagnostic problems for virus detection in boar semen. Proceedings, annual meeting of the United States Animal Health Association.
231-243.
-
McVicar, J. W., Eisner, R. J., Johnson, L. A., & Pursel, V. G.
(1977).
Foot-and-mouth disease and swine vesicular disease viruses in boar semen. Proceedings, annual meeting of the United States Animal Health Association.
221-230.
-
Amann, R. P., Johnson, L., & Pickett, B. W.
(1977).
Connection between the seminiferous tubules and the efferent ducts in the stallion. American Journal of Veterinary Research.
38(10), 1571-1579.
-
Garner, D. L., Reamer, S. A., Johnson, L. A., & Lessley, B. A.
(1977).
Failure of immunoperoxidase staining to detect acrosin in the equatorial segment of spermatozoa (1). Journal of Experimental Zoology.
201(2), 309-315.
-
Amann, R. P., Johnson, L., Thompson, D. L., & Pickett, B. W.
(1976).
Daily spermatozoal production, epididymal spermatozoal reserves and transit time of spermatozoa through the epididymis of the rhesus monkey. Biology of Reproduction.
15(5), 586-592.
-
Johnson, L. A., Pursel, V. G., Chaney, N., & Garner, D. L.
(1976).
Comparison of several extraction procedures for boar spermatozoal acrosin. Biology of Reproduction.
15(1), 79-83.
-
Johnson, L., Berndtson, W. E., & Pickett, B. W.
(1976).
An improved method for evaluating acrosomes of bovine spermatozoa. Journal of Animal Science.
42(4), 951-954.
-
Pursel, V. G., & Johnson, L. A.
(1976).
Frozen boar spermatozoa: methods of thawing pellets. Journal of Animal Science.
42(4), 927-931.
-
Johnson, L. A., Sexton, T. J., & Pursel, V. G.
(1976).
Effect of glycerol on spermatozoa trypsin-like enzyme activity and fertility in the chicken. THERIOGENOLOGY.
5(1), 21-27.
-
Pursel, V. G., Johnson, L. A., & Borkovec, A. B.
(1975).
Effects of in-vitro treatment of boar spermatozoa with TEPA on the fertilization and development of pig eggs. Reproduction.
45(3), 549-552.
-
Johnson, L. A., & Pursil, V. G.
(1975).
Cannulation of ductus deferens of the boar: a surgical technique. American Journal of Veterinary Research.
36(3), 315-317.
-
Johnson, L. A., & Pursel, V. G.
(1975).
Effect of age of boars on testicular lipids and fatty acids. Journal of Animal Science.
40(1), 108-113.
-
Pursel, V. G., & Johnson, L. A.
(1975).
Freezing of boar spermatozoa: fertilizing capacity with concentrated semen and a new thawing procedure. Journal of Animal Science.
40(1), 99-102.
-
Pursel, V. G., & Johnson, L. A.
(1974).
Glutaraldehyde fixation of boar spermatozoa for acrosome evaluation. THERIOGENOLOGY.
1(2), 63-68.
-
Davey, R. J., & Johnson, L. A.
(1974).
Tissue residues, blood chemistry and physiological response of lindane-treated swine. Journal of Animal Science.
38(2), 318-324.
-
Pursel, V. G., Johnson, L. A., & Schulman, L. L.
(1974).
Acrosome morphology of boar Spermatozoa during in vitro aging. Journal of Animal Science.
38(1), 113-116.
-
Johnson, L. A., & Pursel, V. G.
(1973).
Alpha chlorohydrin: studies on the mechanism of action in male swine. Journal of Animal Science.
37(5), 1207-1211.
-
Pursel, V. G., Schulman, L. L., & Johnson, L. A.
(1973).
Effect of holding time on storage of boar spermatozoa at 5C. Journal of Animal Science.
37(3), 785-789.
-
Pursel, V. G., Johnson, L. A., & Schulman, L. L.
(1973).
Effect of dilution, seminal plasma and incubation period on cold shock susceptibility of boar spermatozoa. Journal of Animal Science.
37(2), 528-531.
-
Pursel, V. G., Johnson, L. A., & Schulman, L. L.
(1973).
Fertilizing capacity of boar semen stored at 15 C. Journal of Animal Science.
37(2), 532-535.
-
Pursel, V. G., Johnson, L. A., & Schulman, L. L.
(1972).
Interaction of extender composition and incubation period on cold shock susceptibility of boar spermatozoa. Journal of Animal Science.
35(3), 580-584.
-
Johnson, L. A., Pursel, V. G., & Gerrits, R. J.
(1972).
Total phospholipid and phospholipid fatty acids of ejaculated and epididymal semen and seminal vesicle fluids of boars. Journal of Animal Science.
35(2), 398-403.
-
Johnson, L. A., Pursel, V. G., Gerrits, R. J., & Thomas, C. H.
(1972).
Free amino acid composition of porcine seminal, epididymal and seminal vesicle fluids. Journal of Animal Science.
34(3), 430-434.
-
Pursel, V. G., Johnson, L. A., & Rampacek, G. B.
(1972).
Acrosome morphology of boar spermatozoa incubated before cold shock. Journal of Animal Science.
34(2), 278-283.
-
Johnson, L. A., & Pursel, V. G.
(1972).
Reversible infertility in male swine fed -chlorohydrin. Journal of Animal Science.
34(2), 241-244.
-
Johnson, L. A., Gerrits, R. J., Bond, J., & Oltjen, R. R.
(1971).
Growth and reproductive performance of bulls and heifers fed purified and natural diets. IV. Semen characteristics, body measurements and fertility of bulls (22 to 156 weeks of age). Journal of Animal Science.
33(4), 808-813.
-
Oltjen, R. R., Bond, J., Gerrits, R. J., & Johnson, L. A.
(1971).
Growth and reproductive performance of bulls and heifers fed purified and natural diets. V. Free amino acids in the semen and blood plasma of bulls (puberty to 148 weeks of age). Journal of Animal Science.
33(4), 814-818.
-
Pursel, V. G., Johnson, L. A., & Gerrits, R. J.
(1970).
Distribution of glutamic oxalacetic transaminase and lactic dehydrogenase activities in boar semen after cold shock and freezing. Cryobiology.
7(2), 141-144.
-
Johnson, L. A., Gerrits, R. J., & Young, E. P.
(1969).
The fatty acid composition of porcine spermatozoa phospholipids. Biology of Reproduction.
1(4), 330-334.
-
Johnson, L. A., Gerrits, R. J., & Young, E. P.
(1969).
Quantitative analysis of porcine spermatozoa and seminal plasma phospholipids as affected by frequency of ejaculation. Reproduction.
19(1), 95-102.
-
Pursel, V. G., Johnson, L. A., & Gerrits, R. J.
(1969).
Glutamio-oxaloacetic transaminase and lactic dehydrogenase activities of boar spermatozoa and seminal plasma. Reproduction.
18(1), 176.
-
Johnson, L. A., Pursel, V. G., & Gerrits, R. J.
(1969).
Phospholipid fatty acids and free amino acids of boar semen. Reproduction.
18(1), 169.
-
Waberski, D., Riesenbeck, A., Schulze, M., Weitze, K. F., & Johnson, L.
(2019).
Application of preserved boar semen for artificial insemination: Past, present and future challenges. THERIOGENOLOGY.
137, 2-7.
-
chapter
-
Johnson, L., Ing, N. H., Curley, K. O., Graham, J., Welsh, T. H., & Staub, C.
(2018).
Anatomy and Physiology of the Male Reproductive System and Potential Targets of Toxicants. Comprehensive Toxicology.
(pp. 2-63).
Elsevier.
-
Johnson, L., Welsh, T., Curley, K., & Johnston, C. E.
Anatomy and Physiology of the Male Reproductive System and Potential Targets of Toxicants. COMPREHENSIVE TOXICOLOGY, VOL 11: REPRODUCTIVE AND ENDOCRINE TOXICOLOGY, 2ND EDITION.
(pp. 5-59).
Elsevier.
-
Johnson, L., Ing, N. H., Curley, K. O., Graham, J., Welsh, T. H., & Staub, C.
(2018).
Anatomy and Physiology of the Male Reproductive System and Potential Targets of Toxicants. Comprehensive Toxicology.
(pp. 2-63).
Elsevier.
-
conference paper
-
Gerrits, R. J., Lunney, J. K., Johnson, L. A., Pursel, V. G., Kraeling, R. R., Rohrer, G. A., & Dobrinsky, J. R.
(2005).
Perspectives for artificial insemination and genomics to improve global swine populations. THERIOGENOLOGY.
283-299.
-
Johnson, L. A., Rath, D., Vazquez, J. M., Maxwell, W., & Dobrinsky, J. R.
(2005).
Preselection of sex of offspring in swine for production: current status of the process and its application. THERIOGENOLOGY.
615-624.
-
Heninger, N., Staub, C., Blanchard, T., Varner, D., Love, C., Forrest, D., & Johnson, L.
(2002).
Apoptosis as a mechanism of germ cell loss in mature stallions. THERIOGENOLOGY.
373-376.
-
Staub, C., Heninger, N. L., Donnelly, C. L., Forrest, D. W., Blanchard, T. L., Love, C. C., Varner, D. D., & Johnson, L.
(2002).
Apoptosis during the initiation of equine spermatogenesis. THERIOGENOLOGY.
367-371.
-
Welsh, T. H., Bryan, T. M., Johnson, L., Brinsko, S. P., Rigby, S. L., Love, C. C., ... Blanchard, T. L.
(2002).
Characterization of sperm and androgen production by testes from control and ponazuril-treated stallions. THERIOGENOLOGY.
389-392.
-
Laughlin, A. M., Forrest, D. W., Varner, D. D., Blanchard, T. L., Love, C. C., Welsh, T. H., Johnson, L., & Ing, N. H.
(2002).
DNA microarray analysis of gene expression in testicular tissue of stallions. THERIOGENOLOGY.
413-415.
-
Donnelly, C., Staub, C., Forrest, D., Varner, D., Blanchard, T., Love, C., & Johnson, L.
(2002).
Granulocyte-macrophage colony-stimulating factor reduces testicular germ cell apoptosis in vitro. THERIOGENOLOGY.
377-380.
-
Varner, D. D., Thompson, J. A., Blanchard, T. L., Heck, R., Love, C. C., Brinsko, S. P., & Johnson, L.
(2002).
Induction of the acrosome reaction in stallion spermatozoa: effects of incubation temperature, incubation time, and ionophore concentration. THERIOGENOLOGY.
303-306.
-
Johnson, L. A.
(2000).
Sexing mammalian sperm for production of offspring: the state-of-the-art. Animal Reproduction Science.
93-107.
-
Krueger, C., Rath, D., & Johnson, L. A.
(1999).
Low dose insemination in synchronized gilts. THERIOGENOLOGY.
1363-1373.
-
Maxwell, W. M., & Johnson, L. A.
(1999).
Physiology of spermatozoa at high dilution rates: the influence of seminal plasma. THERIOGENOLOGY.
1353-1362.
-
Johnson, L. A., & Seidel, J.
(1999).
Proceedings of the Symposium. Current Status of Sexing Mammalian Sperm held in Maastricht, The Netherlands, January 8, 2000: Preface and Acknowledgments. THERIOGENOLOGY.
-
Johnson, L. A., & Welch, G. R.
(1999).
Sex preselection: high-speed flow cytometric sorting of X and Y sperm for maximum efficiency. THERIOGENOLOGY.
1323-1341.
-
Welch, G. R., & Johnson, L. A.
(1999).
Sex preselection: laboratory validation of the sperm sex ratio of flow sorted X- and Y-sperm by sort reanalysis for DNA. THERIOGENOLOGY.
1343-1352.
-
Seidel, G. E., & Johnson, L. A.
(1999).
Sexing mammalian sperm--overview. THERIOGENOLOGY.
1267-1272.
-
JOHNSON, L., SAFE, S. H., & DICKERSON, R.
(1992).
EFFECT OF 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN (TCDD) ON SPERMATOGENESIS AND LEYDIG-CELL VOLUME IN ADULT-RATS. Chemosphere.
1175-1181.
-
Johnson, L., Varner, D. D., & Thompson, D. L.
(1991).
Effect of age and season on the establishment of spermatogenesis in the horse. Journal of reproduction and fertility. Supplement.
87-97.
-
Gerrits, R. J., Lunney, J. K., Johnson, L. A., Pursel, V. G., Kraeling, R. R., Rohrer, G. A., & Dobrinsky, J. R.
(2005).
Perspectives for artificial insemination and genomics to improve global swine populations. THERIOGENOLOGY.
283-299.
Research
principal investigator on
co-principal investigator on
Teaching
teaching activities
- BIMS491 Hnr-research Instructor
- VIBS243 Introd Mammalian Histology Instructor
- VIBS285 Directed Studies Instructor
- VIBS443 Biol Of Cells Tissues Instructor
- VIBS485 Directed Studies Instructor
- VIBS602 Histology Instructor
- VIBS948 Anatomy Elective Instructor
- VMID686 Scientific Ethics Instructor
Background
education and training
- Ph.D. in Reproductive Physiology, Colorado State University - (Fort Collins, Colorado, United States) 1978
awards and honors
- Association of Former Students University-Level Distinguished Achievement Award, The, conferred by Texas A&M University - (College Station, Texas, United States), 2017
- Ferguson Award, conferred by Sigma Xi - (Durham, North Carolina, United States), 2015
- Bush Excellence Award for Faculty in Public Service, conferred by Texas A&M University - (College Station, Texas, United States), 2009
- Association of Former Students University-Level Distinguished Achievement Award, The, conferred by Texas A&M University - (College Station, Texas, United States), 2007
- Outstanding Science Communicator Award, conferred by Sigma Xi - (Durham, North Carolina, United States), 2001
- Young Andrologist Award, conferred by American Society of Andrology - (Schaumburg, Illinois, United States), 1988
Contact
first name
- Larry
has last name
- Johnson
mailing address
-
Texas A&M University
Veterinary Integrative Biosciences
4458 TAMU
College Station, TX 77843-4458
USA
Other
- ljohnson1@tamu.edu