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Effect of biotin supplementation on superoxide dismutase and catalase activity in mice fed a biotin-supplemented diet for 8 weeks. (a) Liver superoxide dismutase activity. Values represent the mean ± SEM of 5 mice from each group. (b) Liver catalase activity. Black bars: control group; patterned bars: biotin-supplemented group. Values represent the mean ± SEM of 9 mice from each group. All measurements were performed in triplicate. NS p > 0.050.
