Fig. 3
a: Effects of melatonin treatment on intracellular ROS levels of in-vitro matured PCOS oocytes (A, B, C, D) and control oocytes (E, F, G, H). Melatonin concentration, A, E (0), B, F (10− 5 M), C, G (10− 6 M), D, H (10− 7 M). b: The relative ROS levels in PCOS and Control groups in different melatonin concentrations