The effect of morphine sulfate on the common bile duct:  a clinical study.
D001652:Bile Ducts; D003135:Common Bile Duct / Q000187:drug effects*; D006801:Humans; D009020:Morphine / Q000494:pharmacology*
D009020:Morphine
BILE DUCT, COMMON/effect of drugs on; MORPHINE/effects