Durrani, Z.

pylori mutant helicobacter infection wild-type strain colonization guinea animal guinea pigs wild-type strain helicobacter pylori helicobacter pylori infection omp mutants epithelial cells response pathogen helicobacter pylori inoculated protein pylori infection stomach wild-type h guinea pig model alpb mutants rijpkema kanr cassette antibody isogenic mutants pylori gp 15 epithelial tissue wild-type gp 15 model hopz genes antibody responses hopz mutants infection experiments odenbreit isogenic microbiol experiment adhesion difference mixture disease guinea pig stomach inoculated animals author serum mouse model antral guinea pig-adapted h pylori omp mutants immun study inoculated guinea pigs gastriti cassette primer mucosa adhesin table adherence sequence combination plate group durrani immunol effect p values genome mouse 1 ratio inoculation pathogen eaton science omp-encoding genes dna techniques