Change of type II and type X collagen expression in ovariectomy-induced LFJ cartilage degeneration. (A) Immunofluorescent and immunohistochemistry staining of type II and type X collagen in LFJ cartilage (magnification 600×). (B and C) Quantitative evaluation of type II collagen-positive areas and type X collagen-positive chondrocytes in LFJ cartilage. Key: ***P < 0.01, (N.S.) not significant.