title: Tolerance to opioid narcotics: time course and reversibility of physical dependence in mice.
mesh_terms: D000818:Animals; D004361:Drug Tolerance; D006801:Humans; D007274:Injections, Intraperitoneal; D007981:Levorphanol / Q000008:administration & dosage; D008297:Male; D051379:Mice; D009019:Morphinans / Q000494:pharmacology; D009020:Morphine / Q000008:administration & dosage; D009292:Narcotic Antagonists / Q000494:pharmacology*; D013375:Substance Withdrawal Syndrome; D019966:Substance-Related Disorders; D013997:Time Factors
chemical_list: D009019:Morphinans; D009292:Narcotic Antagonists; D007981:Levorphanol; D009020:Morphine