Mr. Ray is in the ER observation room, brought in by his wif…

Mr. Ray is in the ER observation room, brought in by his wife due to abdominal pain. His symptoms are consistent with acute gastritis and you are suspecting that Helicobacter pylori (H. pylori) has caused this condition in Mr. Ray. H. Pylori initiates the pathogenesis in acute gastritis by possessing all of the following characteristics except:.