Fig. 3From: Effects of intra-articular injection of platelet-rich plasma on the inflammatory process and histopathological characteristics of cartilage and synovium in animals with osteoarthritis: a systematic review with meta-analysisForest plots for effect of the intra-articular injection of PRP on (A) cartilage, (B) synovium, (C) IL-1 levels, (D) IL-6 levels, (E) TNF-α levels and (F) PDGF-A levelsBack to article page