Expression of Collagen Types I, II, IX, and X in the Mineralizing Turkey Gastrocnemius Tendon. Academic Article uri icon


  • The turkey gastrocnemius tendon mineralizes by intramembranous ossification with a transient chondrogenic phase. The mineralizing zone has hypertrophic chondrocytes similar to endochondral bone formation. These similarities prompted the evaluation of this tendon for the presence of type X collagen in the mineralizing zone. Tendons were removed, radiographed, decalcified, and embedded for frozen sections. Seral sections were H&E stained and immunostained individually with antibodies specific collagens (types I, II, IX, and X). Type I collagen was distributed widely throughout the mineralized tendon extracellular matrix. Types II and IX collagen were at the mineralized/non-mineralized junction. Type X collagen was in the pericellular matrix of hypertrophic chondrocytes and in some calcified matrix. These data support the theory that the gastrocnemius tendon has fibrocartilage characteristics and that type X collagen has a role in the tissue's mineralization. Anat Rec, 2019. 2019 Wiley Periodicals, Inc.

published proceedings

  • Anat Rec (Hoboken)

author list (cited authors)

  • Taylor, R. W., Mitchell, G. K., Andrade, J. L., & Svoboda, K. K.

citation count

  • 4

complete list of authors

  • Taylor, Reginald W||Mitchell, Georgia K||Andrade, Jon Lee||Svoboda, Kathy K

publication date

  • June 2020