title: Neurochemical bases for narcotic tolerance and dependence.
mesh_terms: D000818:Animals; D004361:Drug Tolerance; D000882:Haplorhini; D006801:Humans; D008024:Ligands; D051379:Mice; D009020:Morphine / Q000494:pharmacology; D009021:Morphine Dependence / Q000503:physiopathology; D009294:Narcotics / Q000494:pharmacology*; D051381:Rats; D011955:Receptors, Drug / Q000187:drug effects; D019966:Substance-Related Disorders / Q000503:physiopathology*
chemical_list: D008024:Ligands; D009294:Narcotics; D011955:Receptors, Drug; D009020:Morphine