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Digestive Diseases and Sciences|August 1, 1990
Antimony electrodes. Mucosal potential differences and buffer composition adversely affect pH measurements in the stomachA R Opekun, J L Smith, D Y GrahamJAMA|December 16, 1988
Spicy food and the stomach. Evaluation by videoendoscopyD Y Graham, J L Smith, A R OpekunGastroenterology|March 1, 1989
Sensitivity of the esophageal mucosa to pH in gastroesophageal reflux diseaseJ L Smith, A R Opekun, E Larkai, et al.Digestive Diseases and Sciences|November 1, 1995
[13C]Aminopyrine breath test detects altered liver metabolism caused by low-dose oral contraceptivesA R Opekun, P D Klein, D Y GrahamJournal of Clinical Gastroenterology|June 1, 1993
Clarithromycin for the eradication of Helicobacter pyloriD Y Graham, A R Opekun, P D KleinAlimentary Pharmacology & Therapeutics|November 14, 1997
Lack of dose-response with Pancrease MT for the treatment of exocrine pancreatic insufficiency in adultsA R Opekun, F M Sutton, D Y GrahamAlimentary Pharmacology & Therapeutics|April 28, 2005
Effect of different organic acids (citric, malic and ascorbic) on intragastric urease activityA Agha, A R Opekun, S Abudayyeh, et al.FEMS Microbiology Immunology|January 1, 1988
Immunoprotective oral whole cell vaccine for enterotoxigenic Escherichia coli diarrhea prepared by in situ destruction of chromosomal and plasmid DNA with colicin E2D J Evans, D G Evans, A R Opekun, et al.FEMS Microbiology Immunology|December 1, 1988
Non-replicating oral whole cell vaccine protective against enterotoxigenic Escherichia coli (ETEC) diarrhea: stimulation of anti-CFA (CFA/I) and anti-enterotoxin (anti-LT) intestinal IgA and protection against challenge with ETEC belonging to heterologous serotypesD G Evans, D J Evans, A R Opekun, et al.The Journal of Infectious Diseases|April 1, 1988
Effect of age on the frequency of active Campylobacter pylori infection diagnosed by the [13C]urea breath test in normal subjects and patients with peptic ulcer diseaseD Y Graham, P D Klein, A R Opekun, et al.Pageof 116