Figure 3: Effect of repetitive doses, for 28 consecutive days, of DM and different antioxidants on ChE activity in sera of rat. Values are expressed as mean ± S.D. of 6 rats; a, b, c values are not sharing superscripts letters (a, b, c,) differ significantly at p < 0.05; ChE: cholinesterase; DM: dimethoate; VC: vitamin C; SAC: synthetic antioxidant compound.