Figure 3: Effect of exogenous melatonin on lipid per oxidation (LPO) in letrozole induced PCO rats showing significant increase in lipid peroxidation (LPO) analyzed in terms of TBARS level; Melatonin treatment effectively and significantly lowered lipid per oxidation (LPO) of PCO rats. Histogram represents Mean+SE; n=6; Con: Control, L: Letrozole, L+Mel: Letrozole+Melatonin, Mel: Melatonin, Con vs. L=p<0.05, Con vs. L+Mel=p<0.05, Con vs. Mel=p<0.05, L vs. L+Mel=p<0.05.