title: Circadian variation in rat serum 5-hydroxytryptamine and effects of stimuli on the rhythm.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm / Q000187:drug effects; D003624:Darkness; D005019:Ethyl Ethers / Q000494:pharmacology; D005260:Female; D007103:Immobilization; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D012701:Serotonin / Q000097:blood*; D013312:Stress, Physiological / Q000378:metabolism; D013997:Time Factors
chemical_list: D005019:Ethyl Ethers; D012701:Serotonin