Effect of HFD and BM on plasma anti-oxidative enzymes. Enzymatic activities of SOD (A), catalase (B), GSH (D), and levels and ratios of GPX (C), CAT/SOD (E) and GPx/SOD (F) in plasma of mice fed HFD with and without BM. Values represent the mean ± SE (n = 4). Each sample was analyzed in duplicate. a,b,cMean values with common letters do not differ (p < 0·05).