title: Observations on the duodenal mucosa with reference to problems associated with its three-dimensional structure.
mesh_terms: D001344:Autopsy; D001466:Barium Sulfate; D004386:Duodenum / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D006801:Humans; D007413:Intestinal Mucosa / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D008722:Methods; D008961:Models, Structural; D011859:Radiography
chemical_list: D001466:Barium Sulfate