Quantification of the in vitro induced tolerance to morphine of the isolated guinea pig ileum.
D000818:Animals; D004361:Drug Tolerance; D004558:Electric Stimulation; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects*; D013997:Time Factors
D009020:Morphine