title: [Advances in research on sleep mechanisms].
mesh_terms: D001078:APUD Cells / Q000502:physiology; D000818:Animals; D003701:Delta Sleep-Inducing Peptide / Q000502:physiology; D012701:Serotonin / Q000502:physiology; D012890:Sleep / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology
chemical_list: D012701:Serotonin; D003701:Delta Sleep-Inducing Peptide