title: Daily variation in concentration of cortisol in plasma in intact and hypophysectomized gulf killifish.
abstract: A daily variation in concentration of cortisol in plasma is synchronized by a 12-hour daily photoperiod in intact as well as in hypophysectomized fish. The daily rhythm in concentration of the adrenal steroid does not depend on a daily rhythm in the concentration of pituitary adrenocorticotropic hormone.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000097:blood; D000818:Animals; D002940:Circadian Rhythm; D005399:Fishes; D006854:Hydrocortisone / Q000097:blood*; D007016:Hypophysectomy; D013997:Time Factors
chemical_list: D000324:Adrenocorticotropic Hormone; D006854:Hydrocortisone