title: Effect of morphine and its conjugates on the isolated ileal preparation of guinea-pig.
mesh_terms: D000818:Animals; D005965:Glucuronates / Q000494:pharmacology; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009022:Morphine Derivatives; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects*; D010755:Organophosphates / Q000494:pharmacology; D013463:Sulfuric Acid Esters / Q000494:pharmacology
chemical_list: D005965:Glucuronates; D009022:Morphine Derivatives; D010755:Organophosphates; D013463:Sulfuric Acid Esters; D009020:Morphine