Helicobacter pyloriHelicobacter InfectionsGastritisGastric MucosaHelicobacterPeptic UlcerStomach UlcerDuodenal UlcerStomach NeoplasmsUreaseClarithromycinStomachMetronidazoleAmoxicillinAnti-Ulcer AgentsDyspepsiaOmeprazoleBacterial ProteinsGastritis, AtrophicStomach DiseasesBismuthAntigens, BacterialBreath TestsPyloric AntrumAnti-Bacterial AgentsLeg UlcerGastroscopyPressure UlcerHelicobacter hepaticusPeptic Ulcer HemorrhageAntibodies, BacterialSkin UlcerLansoprazoleProton Pump Inhibitors2-PyridinylmethylsulfinylbenzimidazolesHelicobacter heilmanniiDrug Therapy, CombinationRanitidineTinidazoleLewis Blood-Group SystemMetaplasiaPepsinogen ABiopsyDrug DiscoveryDuodenitisUreaDNA, BacterialFurazolidoneGerbillinaeEndoscopy, GastrointestinalGastric AcidPeptic Ulcer PerforationGastrinsMolecular Sequence DataPolymerase Chain ReactionCytotoxinsAntacidsPepsinogensGastric JuiceLymphoma, B-Cell, Marginal ZonePylorusTetracyclinePepsinogen CAntitrichomonal AgentsPenicillinsRabeprazoleOrganometallic CompoundsNitroreductasesVirulenceGenes, BacterialImmunoglobulin GBuruli UlcerVirulence FactorsGastric MucinsBacterial AdhesionGastrointestinal DiseasesSulfoxidesEnzyme-Linked Immunosorbent AssayHistamine H2 AntagonistsPrevalenceEndoscopy, Digestive SystemSensitivity and SpecificityAchlorhydriaParietal Cells, GastricSequence Analysis, DNASeroepidemiologic StudiesEndoscopyAntigens, CD15Base SequenceGastroesophageal RefluxAdhesins, BacterialMicrobial Sensitivity TestsGenomic IslandsEpithelial CellsGenotypeGene Expression Regulation, BacterialGenome, BacterialInterleukin-8Drug Resistance, Bacterial