Immunohistochemical detection and semi-quantification of in vivo OCN and CD105 expression. OCN (A, B) and CD105 (C, D) expression were assayed following induction of hormone-induced ANFH and 8 weeks after treatment with transplantation of MSCs. n = 15 or 30/group (3 sections/animal, 5 or 10 animals/group). *, P < 0.05 versus the ANFH group. #, P < 0.05 versus the MSCs + FG group.