Figure 2: Effects of 28 days oral administration of CYP, PPN and CYP plus PPN on reduced glutathione (A) and glutathione peroxidase (B) 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.