title: Adrenal steroids and the maintenance of a circadian distribution of paradoxical sleep in rats.
mesh_terms: D000315:Adrenalectomy; D000704:Analysis of Variance; D000818:Animals; D002369:Castration; D002940:Circadian Rhythm; D003624:Darkness; D004569:Electroencephalography; D004958:Estradiol / Q000494:pharmacology; D005260:Female; D006854:Hydrocortisone / Q000494:pharmacology*; D008027:Light; D011374:Progesterone / Q000494:pharmacology; D011830:Radiation Effects; D051381:Rats; D012895:Sleep, REM
chemical_list: D011374:Progesterone; D004958:Estradiol; D006854:Hydrocortisone