title: Modification of the Randall-Selitto analgesic apparatus.
mesh_terms: D000700:Analgesics / Q000494:pharmacology*; D000818:Animals; D001241:Aspirin / Q000494:pharmacology; D001274:Atmospheric Pressure; D011431:Dextropropoxyphene / Q000494:pharmacology; D007213:Indomethacin / Q000494:pharmacology; D008722:Methods; D009020:Morphine / Q000494:pharmacology; D010600:Pharmacology / Q000295:instrumentation*; D010653:Phenylbutazone / Q000494:pharmacology; D051381:Rats
chemical_list: D000700:Analgesics; D009020:Morphine; D010653:Phenylbutazone; D001241:Aspirin; D011431:Dextropropoxyphene; D007213:Indomethacin