title: Melatonin secretion as a neurobiological "marker" and effects of light in humans.
mesh_terms: D001714:Bipolar Disorder / Q000503:physiopathology*; D002940:Circadian Rhythm; D006801:Humans; D008027:Light; D008550:Melatonin / Q000378:metabolism*
chemical_list: D008550:Melatonin