In situ pH of duodenal bulb contents in normal and duodenal ulcer subjects.
D002933:Cineradiography; D004381:Duodenal Ulcer / Q000000981:diagnostic imaging / Q000209:etiology*; D004386:Duodenum; D005745:Gastric Acidity Determination; D006801:Humans; D006863:Hydrogen-Ion Concentration; D011708:Pylorus / Q000000981:diagnostic imaging