Biochemical changes during sleep.
D000109:Acetylcholine / Q000378:metabolism; D000818:Animals; D001669:Biochemical Phenomena; D001671:Biochemistry; D001923:Brain Chemistry; D004325:Dreams; D004569:Electroencephalography; D005133:Eye Movements; D006801:Humans; D051381:Rats; D012119:Respiration; D012701:Serotonin / Q000378:metabolism; D012890:Sleep / Q000502:physiology*
D012701:Serotonin; D000109:Acetylcholine