Fig. 1From: The protective effect of kirenol in osteoarthritis: an in vitro and in vivo studyEffect of kirenol on the cell viability of chondrocytes (A). Chemical structure of kirenol. B, C The cytotoxic effects of kirenol (0, 5, 10, 20, 40 and 80 μM) on chondrocytes were determined at various concentrations for 24 and 48 h using a CCK8 assay. The data presented are the means ± S.D. *P < 0.05, **P < 0.01 vs. control group, n = 6Back to article page