part of part of has part has part biliary tree biliary system biliary tract uberon MA:0001273 biliary apparatus Organ system subdivision that consists of the organs and ducts that are involved in the production and transportation of bile. In most species this is the gallbladder and the bile ducts (biliary tree). MESH:D001659 GAID:279 FMA:79646 UBERON:0002294 hepatobiliary system organ system subdivision