Naloxone-induced facilitation of contractions, spontaneous activity and tolerance to morphine in ileum of morphine-dependent guinea-pigs.
D000818:Animals; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D004558:Electric Stimulation; D005283:Fentanyl / Q000494:pharmacology; D006168:Guinea Pigs; D006801:Humans; D007082:Ileum / Q000187:drug effects*; D066298:In Vitro Techniques; D009020:Morphine / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D009021:Morphine Dependence / Q000503:physiopathology*; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects; D009270:Naloxone / Q000494:pharmacology*
D009270:Naloxone; D009020:Morphine; D005283:Fentanyl