Day and Night Variation in Melatonin Level affects Plasma Membrane Redox System in Red Blood Cells Author: Shilpa Chakravarty, PhD Melatonin is a well-established antioxidant and sleep-regulating hormone. Over the past fifty years, its efficiency as a regulator of circadian rhythm and several other physiological functions has been studied extensively in different species. As a … Continue reading Day and Night Variation in Melatonin Level affects Plasma Membrane Redox System in Red Blood Cells