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The changes of oxidative stress in the liver after E. coli infection. (A) MDA; (B) GSH; (C) GSH-Px; (D) CAT; (E) SOD. Note: Letter a, b, c or d represent difference (p<0.05) between the group and the lean group, lean-E. coli group, DIO group, or DIO-E. coli group, respectively.
