title: Effect of ovarian hormones on synchrony of hamster circadian rhythms.
mesh_terms: D000818:Animals; D002369:Castration; D002940:Circadian Rhythm / Q000187:drug effects*; D006224:Cricetinae; D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D009043:Motor Activity / Q000187:drug effects; D011374:Progesterone / Q000494:pharmacology*
chemical_list: D011374:Progesterone; D004958:Estradiol