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Effects of gallic acid (GA) on antioxidant enzymes including superoxide dismutase (SOD) (A) and glutathione peroxidase (GPx) (B) and the lipid peroxidation indicator, malondialdehyde (MDA) (C) in liver homogenate of rats exposed to zinc oxide nanoparticles (ZNPs) and/or arsenic trioxide (ATO) for 60 days. Data are expressed as the mean ± SE (n = 10). Columns carrying different superscripts are significantly different (one-way ANOVA) (p < 0.05).
