title: Dominance relations and the pituitary-adrenal system in rats.
mesh_terms: D000818:Animals; D003345:Corticosterone / Q000097:blood*; D003441:Crowding; D005557:Formaldehyde / Q000494:pharmacology; D006799:Housing, Animal; D006801:Humans; D008297:Male; D010913:Pituitary-Adrenal System / Q000187:drug effects; D051381:Rats; D012621:Seasons; D012890:Sleep; D012919:Social Behavior; D012930:Social Dominance; D012934:Social Isolation; D013315:Stress, Psychological; D014851:Wakefulness
chemical_list: D005557:Formaldehyde; D003345:Corticosterone