title: Role of catecholamines in morphine and meperidine analgesia.
mesh_terms: D000698:Analgesia; D000818:Animals; D002395:Catecholamines / Q000502:physiology*; D008297:Male; D008614:Meperidine / Q000494:pharmacology*; D051379:Mice; D009020:Morphine / Q000494:pharmacology*
chemical_list: D002395:Catecholamines; D009020:Morphine; D008614:Meperidine