title: Diurnal rhythms of serotonin in monkey cerebrospinal fluid.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D008401:Gas Chromatography-Mass Spectrometry; D008251:Macaca / Q000134:cerebrospinal fluid*; D008253:Macaca mulatta / Q000134:cerebrospinal fluid*; D008297:Male; D008550:Melatonin / Q000134:cerebrospinal fluid; D012701:Serotonin / Q000134:cerebrospinal fluid*
chemical_list: D012701:Serotonin; D008550:Melatonin