Fig. 5From: Cycloartanes from Oxyanthus pallidus and derivatives with analgesic activitiesEffect of pallidioside B (OP5), its aglycone (AOP2) and acetylated (HOP2) derivatives on the first (panel a) and second (panel b) phases of formalin-induced pain in mice. Each bar represents the mean ± SEM, n = 6. **P <0.01, ***p <0.001 significant difference compared to control. α p < 0.05 significant difference between the two groups. Diclo: diclofenacBack to article page