title: Characteristics of the increased response to electrical stimulation of ileum preparations from morphine pretreated guinea pigs.
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects* / Q000502:physiology; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects; D009270:Naloxone / Q000494:pharmacology
chemical_list: D009270:Naloxone; D009020:Morphine