Fig. 4
From: Cycloartanes from Oxyanthus pallidus and derivatives with analgesic activities
Effect of pallidioside A (OP3), its aglycone (AOP1) and acetylated (HOP1) derivatives on the first (panel a) and second (panel b) phases of formalin-induced pain in mice. Each bar represents the mean ± SEM of six animals. *p < 0.05, **p < 0.01, ***p < 0.001 significant different compared to the control. α p < 0.05 significant difference between the two groups. Diclo: diclofenac