Regulation of pineal melatonin in the Syrian hamster.
D000818:Animals; D002940:Circadian Rhythm; D006224:Cricetinae; D003624:Darkness; D007545:Isoproterenol / Q000494:pharmacology; D008027:Light; D008297:Male; D008550:Melatonin / Q000378:metabolism*; D008647:Mesocricetus; D010870:Pineal Gland / Q000187:drug effects / Q000378:metabolism*; D011863:Radioimmunoassay
D008550:Melatonin; D007545:Isoproterenol