title: [Studies of sleep inducing substance].
mesh_terms: D000119:Acetylmuramyl-Alanyl-Isoglutamine / Q000031:analogs & derivatives*; D000818:Animals; D002415:Cats; D002940:Circadian Rhythm; D003701:Delta Sleep-Inducing Peptide; D006020:Glycopeptides / Q000032:analysis* / Q000302:isolation & purification; D006801:Humans; D051379:Mice; D009842:Oligopeptides / Q000032:analysis* / Q000138:chemical synthesis; D015230:Prostaglandin D2; D011457:Prostaglandins D / Q000502:physiology; D011817:Rabbits; D051381:Rats; D012890:Sleep / Q000502:physiology*
chemical_list: D006020:Glycopeptides; D009842:Oligopeptides; D011457:Prostaglandins D; D000119:Acetylmuramyl-Alanyl-Isoglutamine; C033697:sleep-promoting factor S; D003701:Delta Sleep-Inducing Peptide; D015230:Prostaglandin D2