Figure 1From: Melatonin: shedding light on infertility? - a review of the recent literatureActions of melatonin and its metabolites. Extrapolated from Hardeland [46], Reiter et al. [13] and Watson [47]. GPx: glutathione peroxidase; SOD: superoxide dismutase; ROS: Reactive oxygen species; RNS: Reactive nitrogen species.Back to article page