title: Antagonism by phenoxybenzamine and pentazocine of the antinociceptive effects of morphine in the spinal cord.
mesh_terms: D000700:Analgesics / Q000037:antagonists & inhibitors*; D000818:Animals; D007278:Injections, Spinal; D008297:Male; D009020:Morphine / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D010423:Pentazocine / Q000494:pharmacology*; D010643:Phenoxybenzamine / Q000494:pharmacology*; D010646:Phentolamine / Q000494:pharmacology; D051381:Rats
chemical_list: D000700:Analgesics; D010643:Phenoxybenzamine; D009020:Morphine; D010423:Pentazocine; D010646:Phentolamine