Fig. 8From: Estrogen alleviates post-traumatic osteoarthritis progression and decreases p-EGFR levels in female mouse cartilageP-EGFR expression in the bilateral knee cartilage of mice in groups.(Scale bar = 20 μm). (A). female control group; (B). ovariectomized group; (C). ovariectomized group supplemented with estrogen; and (D). male group; Sham, sham operation; DMM, medial meniscus instability operation; Ipsilateral comparison between groups B and A (* * P < 0.01). Ipsilateral comparison between groups C and B (# # P < 0.01)Back to article page