Figure 4: Effect of repetitive doses, for 28 consecutive days, of DM and different antioxidants on LPO in rat liver. Values are expressed as mean ± S.D. of 6 rats; a, b, c, d Values are not sharing superscripts letters (a, b, c, d) differ significantly at p < 0.05; DM: dimethoate; LPO: lipid peroxidation; VC: vitamin C; SAC: synthetic antioxidant compound.