Impacts of mesenchymal stem cells and hyaluronic acid on inflammatory indicators and antioxidant defense in experimental ankle osteoarthritis

Figure 3 Right hind leg pictures of the tested groups. A-C: Right hind legs normal rats at the 4^th week (A), 5^th week (B), and 6^th week (C); D-F: Osteoarthritic rats in the 4^th week (D), 5^th week (E), and 6^th week (F) showed swelling and redness as external signs of inflammation; G-O: Osteoarthritic rats treated with bone marrow mesenchymal stem cells (BMMSCs) (G-I), hyaluronic acid (HA), (J-L) and BMMSCs + HA (M-O) exhibited marked improvements in these morphological signs (in the 4^th, 5^th, and 6^th weeks, respectively).