Antigen epitope of Helicobacter pylorivacuolating cytotoxin A

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AIM: To construct and select antigen epitopes of vacuolating cytotoxin A (VacA) for nontoxic VacA vaccine against Helicobacter pylori ( H pylori ) infection.METHODS: Eleven VacA epitopes were predicted according to VacA antigenic bioinformatics. Three can
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