title: Mass spectral identification of melatonin in blood.
mesh_terms: D000818:Animals; D001001:Anura; D001681:Biological Assay; D002645:Chickens; D002855:Chromatography, Thin Layer; D002940:Circadian Rhythm; D007814:Larva / Q000187:drug effects; D013058:Mass Spectrometry; D008550:Melatonin / Q000097:blood* / Q000494:pharmacology; D008722:Methods; D010870:Pineal Gland / Q000502:physiology; D011894:Rana pipiens
chemical_list: D008550:Melatonin