Fig. 4From: Comparison of the effects of exercise with chondroitin sulfate on knee osteoarthritis in rabbitsScanning electron microscopy view of surface of fresh cartilage. a Normal group was uniform without splits or lacunae. b Control group had deep splits on the surface. c Cartilage from rabbits where chondroitin sulfate (CS) had been administered were relatively uniform, with a visibly twisted wrinkled texture in other areas. d Rabbits that had exercised (E group) had a relatively rough surfaceBack to article page