Immunohistochemistry of FoxO TKO mouse meniscus. Sesn3, Prg4, Col10a1, Mmp13, Lc3, and Vcam1 immunohistochemistry of Col2Cre TKO mouse meniscus at 2 mo old (A–F) and AcanCreERT2 TKO at 6 mo old (G–L). (n = 6 per group, *P < 0.05.) (Scale bar: 100 μm.)