Figure 2.

Effects of S‐ASCs and V‐ASCs in the rat model of OA. OA was created in the right knee of Sprague Dawley rats. ASC‐treated cartilage was compared to OA rat models treated with PBS. (A) Representative gross morphologies; (B) staining results of haematoxylin and eosin, safranin O and IHC for type‐II collagen; (C) articular cartilage from the right knee in the four treatment groups was used for qPCR analysis to determine the relative mRNA expression of the indicated chondrocyte‐related markers (n = 6). *P < 0.05, **P < 0.01.