<prompt> True about helicobacter pylori are all except ?Urea breath test is diagnosticGram negative, flagellate bacilliRisk factor for development of adenocarcinoma of stomachIt provides life long immunity  <response>: Ans. is d i.e., It provides life long immunity . There is no effective immunity against H. pylori infection. The immune response to H. pylon includes both the production of antibody local and systemic and a cell-mediated response but is ineffective in clearing the bacterium. . H. Pylori has a protective role against gastroesophageal reflux disease GERD and adenocarcinoma of the esophagus and gastric cardia. . Antral predominant gastritis is most closely linked with duodenal ulceration, whereas pangastritis is linked with gastric ulceration and adenocarcinoma. Antral gastritis -- duodenal ulcer Pangastritis -- Gastric ulcer Gastric adenocarcinoma . IL - 1 fi is the major proinflammatory cytokine in peptic ulcer disease. About other options . Urea breath test is the most consistently accurate test. . H. pylori is a gram negative, flagellate bacillus which is motile by lophotrichous flagella. 