title: Special article: functional implications of human portal and bile ductular ultrastructure.
mesh_terms: D001369:Axons; D001652:Bile Ducts / Q000166:cytology* / Q000502:physiology; D001653:Bile Ducts, Intrahepatic / Q000166:cytology / Q000502:physiology; D001692:Biological Transport; D002196:Capillaries; D004847:Epithelial Cells; D006801:Humans; D008099:Liver / Q000033:anatomy & histology / Q000166:cytology; D008854:Microscopy, Electron