The aim of this study was to investigate the efficiency of a simplified method for gastric Helicobacter pylori (H. pylori)detection. By using primers complement to the sequence of the urease A gene of H. pylori, PCR assay was established to detect H. pylori in gastric biopsy samples. A 411-bp product was obtained and analyzed by agarose gel electrophoresis. The PCR assay was of 100% of specificity,detected all 41 strains of H. pylori isolated from the patients and did not amplify other 8 enteric bacteria of...