title: Clinical and experimental studies of stress and the endogenous opioid system.
mesh_terms: D000293:Adolescent; D000328:Adult; D003913:Dextroamphetamine / Q000494:pharmacology; D004723:Endorphins / Q000097:blood*; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D008297:Male; D011247:Pregnancy; D013312:Stress, Physiological / Q000097:blood* / Q000209:etiology; D013514:Surgical Procedures, Operative; D014430:Twins, Monozygotic; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D001615:beta-Endorphin; D003913:Dextroamphetamine; D006854:Hydrocortisone