title: An endoscopic view of the duodenal bulb.
mesh_terms: D004381:Duodenal Ulcer / Q000175:diagnosis; D004386:Duodenum; D004415:Dyspepsia / Q000175:diagnosis; D004724:Endoscopy; D005336:Fiber Optic Technology; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006801:Humans; D011708:Pylorus