BACKGROUND Expression of the Helicobacter pylori outer membrane protein HopH is regulated by phase variation within a CT dinucleotide repeat motif of the hopH gene. METHODS To investigate the importance of HopH for bacterial pathogenicity, we performed a detailed functional genomic and population-based genetic characterization of this contingency locus. RESULTS Sequencing of hopH in H. pylo...

Abstract Background There are geographic variations in the genotypes of Helicobacter pylori ( H. ) cagA , vacA iceA oipA and dupA . The aim study was to investigate distribution these among strains from five regions China their association with clinical outcomes. Materials methods Gastric biopsy specimens were obtained 348 patients different gastrointestinal diseases China. regional 89 Shandong...

In this study we aimed to investigate young college students’ experienced problems and support resources regarding online or distance education during the COVID-19 pandemic. We used an innovative technique, Online Photovoice (OPV) method collect data. The research includes theoretical framework created understand factors that facilitate complicate online/distance processes for prospective teach...