title: A flexible view of the gut 1976.
mesh_terms: D000293:Adolescent; D000328:Adult; D014670:Ampulla of Vater / Q000601:surgery; D001466:Barium Sulfate; D002648:Child; D002675:Child, Preschool; D002758:Cholangiography / Q000379:methods; D002769:Cholelithiasis / Q000601:surgery; D002779:Cholestasis / Q000000981:diagnostic imaging; D003108:Colonic Diseases / Q000175:diagnosis; D004386:Duodenum; D019723:Endoscopes; D004724:Endoscopy; D005336:Fiber Optic Technology; D005767:Gastrointestinal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D007421:Intestine, Small; D010182:Pancreatic Diseases / Q000000981:diagnostic imaging
chemical_list: D001466:Barium Sulfate