“… melatonin led to high levels of AsA and GSH, and increased the activity of total superoxide dismutase (SOD, EC … peroxidase (APX, EC 1.11.1.11), monodehydroascorbate reductase (MDHAR, EC 1.6.5.4) dehydroascorbate reductase ( DHAR , EC 1.5.5.1), glutathione ….2) in the AsA–GSH cycle.”