GSR and malignant colon neoplasm: Manju et al. [51] observed enhancement of plasma and hepatic anti-oxidant status (glutathione GSH, pyrogallol peroxidase PPx, glutathione-S-transferase GST, glutathione reductase GR, SOD, CAT, Vitamin C, Vitamin A and β-carotene) in rats with DMH induced colon cancer upon intragastric administration of 0.2 mg/kg luteolin.