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Protective effect of immunization of mice with the pH9 peptide on H. pylori infection. C57BL/6 mice were i.p. immunized five times with either FCA only, pCont plus FCA, or pH9 plus FCA prior to oral inoculation with the H. pylori TK1402 strain. Two weeks after infection, the mice were sacrificed and the number of H. pylori colonizing gastric mucosa was quantified. Horizontal lines represent mean numbers of colonizing bacteria.
