part of part of has part has part biliary tree biliary system FMA:79646 GAID:279 MA:0001273 MESH:D001659 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). UBERON:0002294 biliary apparatus biliary tract uberon hepatobiliary system organ system subdivision