Figure 1: Effect of in vivo administration of crude extract of Oncidium flexuosum Sims. on the levels of alanine aminotransferase (A) and –SH groups (B), catalase activity (C), lipid peroxidation (D), and mitochondrial swelling (E) in rat livers. Values are expressed as the mean ± SD (n = 5). *Significantly different from the control group (P < 0.05).