Figure 1: Effects of 28 days oral administration of CYP, PPN and CYP plus PPN on lipid peroxidation level of liver and kidney in male rats. Each bar represents mean SE of 6 rats. Significant differences are indicated by superscript a compared to control, superscript b compared to CYP group. C: control, GN oil: ground nut oil PPN: piperine, CYP: cypermethrin, PPN at 50 mg/kg and CYP at 25 mg/kg.