title: Biliary duct stone formation.
mesh_terms: D001659:Biliary Tract / Q000033:anatomy & histology*; D002769:Cholelithiasis / Q000209:etiology; D003135:Common Bile Duct / Q000033:anatomy & histology; D005704:Gallbladder / Q000033:anatomy & histology*; D006500:Hepatic Duct, Common / Q000033:anatomy & histology; D006801:Humans; D008722:Methods; D008961:Models, Structural