title: Variations in plasma cortisol concentrations over a 24-hour period in the rainbow trout Salmo gairdneri.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D005260:Female; D006854:Hydrocortisone / Q000097:blood*; D008297:Male; D012487:Salmonidae / Q000502:physiology*; D012621:Seasons; D014337:Trout / Q000097:blood / Q000502:physiology*
chemical_list: D006854:Hydrocortisone