title: Nocturnal plasma melatonin in humans: episodic pattern and influence of light.
mesh_terms: D000328:Adult; D006801:Humans; D008027:Light; D008550:Melatonin / Q000097:blood*; D010507:Periodicity; D012894:Sleep Stages / Q000502:physiology
chemical_list: D008550:Melatonin