title: Daily rhythms in tryptophan and serotonin content in mouse brain: the apparent independence of these parameters from daily changes in food intake and from plasma tryptophan content.
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism*; D002940:Circadian Rhythm; D003624:Darkness; D004032:Diet; D008027:Light; D051379:Mice; D012701:Serotonin / Q000378:metabolism*; D014364:Tryptophan / Q000097:blood / Q000378:metabolism*
chemical_list: D012701:Serotonin; D014364:Tryptophan