title: Alterations in morphine-induced analgesia and tolerance by various compounds.
mesh_terms: D000625:Aminooxyacetic Acid / Q000494:pharmacology; D000818:Animals; D003994:Bucladesine / Q000494:pharmacology; D006152:Cyclic GMP / Q000494:pharmacology; D004361:Drug Tolerance; D006801:Humans; D008297:Male; D051379:Mice; D009020:Morphine / Q000494:pharmacology*; D009021:Morphine Dependence / Q000503:physiopathology; D010146:Pain / Q000503:physiopathology*; D014364:Tryptophan / Q000494:pharmacology
chemical_list: D000625:Aminooxyacetic Acid; D003994:Bucladesine; D009020:Morphine; D014364:Tryptophan; D006152:Cyclic GMP