title: EFFECT OF MORPHINE ON TOLERANCE TO NALORPHINE AND ITS METABOLISM.
mesh_terms: D001921:Brain; D004361:Drug Tolerance; D007267:Injections; D007274:Injections, Intraperitoneal; D008660:Metabolism; D009020:Morphine; D009269:Nalorphine; D051381:Rats; D012106:Research
chemical_list: D009020:Morphine; D009269:Nalorphine
keywords: BRAIN; DRUG TOLERANCE; EXPERIMENTAL LAB STUDY; INJECTIONS, INTRAPERITONEAL; METABOLISM; MORPHINE; NALORPHINE; RATS