Fig. 4From: Attenuation of osteoarthritis progression through intra-articular injection of a combination of synovial membrane-derived MSCs (SMMSCs), platelet-rich plasma (PRP) and conditioned medium (secretome)IHC evaluation of MMP3 in OA-induced knee articular cartilage. Compared with other groups, IHC revealed low expression of MMP3 in treatment group 4 (×10)Back to article page