Fig. 7From: Cartilage stem/progenitor cells are activated in osteoarthritis via interleukin-1β/nerve growth factor signalingSchematic of NGF role and IL-1β involvement in OA. See text for details. IL interleukin, MMP matrix metalloproteinase, NGF nerve growth factor, NGFR nerve growth factor receptor, OA osteoarthritisBack to article page