title: Comparison of the effects of phenoxybenzamine and morphine on the isolated guinea pig ileum.
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D009020:Morphine / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects*; D009270:Naloxone / Q000494:pharmacology; D010643:Phenoxybenzamine / Q000494:pharmacology*
chemical_list: D010643:Phenoxybenzamine; D009270:Naloxone; D009020:Morphine