title: Use of the novel irreversible opiate antagonist, beta-chlornaltrexamine, in the estimation of the normorphine affinity constant in naive and morphine tolerant guinea-pig ilea.
mesh_terms: D000818:Animals; D005260:Female; D006168:Guinea Pigs; D006801:Humans; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D008297:Male; D009021:Morphine Dependence / Q000503:physiopathology*; D009022:Morphine Derivatives / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects*; D009270:Naloxone / Q000031:analogs & derivatives*; D009271:Naltrexone / Q000031:analogs & derivatives* / Q000494:pharmacology; D009292:Narcotic Antagonists / Q000494:pharmacology*
chemical_list: D009022:Morphine Derivatives; D009292:Narcotic Antagonists; D009270:Naloxone; D009271:Naltrexone; C017120:chlornaltrexamine; C010616:normorphine