title: Relation of stress-induced analgesia to stimulation-produced analgesia.
mesh_terms: D000313:Adrenal Medulla / Q000502:physiology; D000698:Analgesia; D000818:Animals; D001362:Avoidance Learning; D001921:Brain / Q000502:physiology; D004361:Drug Tolerance; D004558:Electric Stimulation; D004723:Endorphins / Q000502:physiology; D004745:Enkephalins / Q000502:physiology; D007016:Hypophysectomy; D009020:Morphine / Q000494:pharmacology; D010812:Physical Stimulation; D010913:Pituitary-Adrenal System / Q000502:physiology; D012018:Reflex / Q000502:physiology; D013312:Stress, Physiological / Q000503:physiopathology*; D013997:Time Factors
chemical_list: D004723:Endorphins; D004745:Enkephalins; D009020:Morphine