STUDIES ON TOLERANCE TO NALORPHINE AND TO  LEVALLORPHAN.
D000818:Animals; D004361:Drug Tolerance; D007108:Immune Tolerance; D007977:Levallorphan; D051379:Mice; D009020:Morphine; D009021:Morphine Dependence; D009269:Nalorphine; D009292:Narcotic Antagonists; D012106:Research
D009292:Narcotic Antagonists; D007977:Levallorphan; D009020:Morphine; D009269:Nalorphine
DRUG TOLERANCE; EXPERIMENTAL LAB STUDY; MICE; MORPHINE; MORPHINE ADDICTION; NALORPHINE; NARCOTIC ANTAGONISTS