This project was funded by PTDC/SAU-OSM/66323/2006 and SFRH/BPD/34094/2006 research grants from the Fundacao para a Ciencia e a Tecnologia (FCT), Portugal.; Helicobacter pylori (H. pylori) infection triggers a sequence of gastric alterations starting with an inflammation of the gastric mucosa that, in some cases, evolves to gastric cancer. Efficient vaccination has not been achieved, thus it is essential to fin...