Fig. 7.

Immunohistochemical expression of CD10 (A, C, E) and CD34 (B, D, F) in bones, joints and muscles. Panels (A) and (B) (near sections) show the ilium at gestational age (GA) 15 weeks, panels (C) and (D) (adjacent sections) show the hip joint at GA 20 weeks, and panels (E) and (F) (adjacent sections) show the gluteal muscles and the skin covering them at GA 20 weeks. The endochondral ossification center (stars in panels A and B) as well as the synovial tissue (panels C and D) were positive for both CD10 and CD34. Striated muscle fibers were separated by abundant sheaths strongly positive for CD34 (F) and weakly positive for CD10 (E). All panels were prepared at the same magnification. Scale bar in panel (A)=1 mm (A-F).