Fig. 4From: Antiproliferative activity of marine stingray Dasyatis sephen venom on human cervical carcinoma cell lineEffect of D. sephen venom on cellular antioxidant status in HeLa cells. Bars represent the changes on the activities of SOD, CAT and GPx in control and venom treated cells. *Enzyme concentration required for 50 % inhibition of nitroblue tetrazolium reduction in one minute. **μmol of hydrogen peroxide consumed per minute. ***μg of glutathione consumed per minuteBack to article page