title: Antagonism of analgesics by amine-depleting agents.
mesh_terms: D000818:Animals; D001241:Aspirin / Q000494:pharmacology*; D001681:Biological Assay; D002395:Catecholamines / Q000494:pharmacology; D008750:Methyldopa / Q000494:pharmacology*; D051379:Mice; D009020:Morphine / Q000494:pharmacology*; D012110:Reserpine / Q000494:pharmacology*; D014443:Tyrosine / Q000494:pharmacology*
chemical_list: D002395:Catecholamines; D014443:Tyrosine; D008750:Methyldopa; D009020:Morphine; D012110:Reserpine; D001241:Aspirin