Helicobacter pyloriGastritisHelicobacter InfectionsHelicobacterGastritis, AtrophicGastric MucosaUreaseStomachPyloric AntrumPeptic UlcerStomach NeoplasmsDyspepsiaHelicobacter heilmanniiAmoxicillinGastroscopyClarithromycinMetronidazoleStomach DiseasesHelicobacter hepaticusT-Lymphocytes, CytotoxicAnti-Ulcer AgentsMetaplasiaOmeprazoleStomach UlcerBacterial ProteinsPepsinogen AGastritis, HypertrophicBismuthAntibodies, BacterialGastrinsDuodenal UlcerAchlorhydriaBreath TestsBiopsyDuodenitisAntigens, BacterialAnti-Bacterial AgentsPepsinogen CCytotoxinsEndoscopy, GastrointestinalLansoprazolePylorusPepsinogensProton Pump InhibitorsParietal Cells, GastricDrug Therapy, CombinationChronic DiseaseGastric JuiceGastric AcidBile RefluxGerbillinaeDNA, BacterialPolymerase Chain ReactionLewis Blood-Group SystemCampylobacterTinidazole2-PyridinylmethylsulfinylbenzimidazolesMolecular Sequence DataRanitidineUreaHelicobacter felisAntacidsLymphoma, B-Cell, Marginal ZonePrecancerous ConditionsEndoscopyEndoscopy, Digestive SystemImmunoglobulin GCytotoxicity, ImmunologicFurazolidoneAnemia, PerniciousGastrointestinal DiseasesGastric MucinsGastric Acidity DeterminationEnzyme-Linked Immunosorbent AssayGastroesophageal RefluxAcinonyxVirulence FactorsOrganometallic CompoundsVirulenceTetracyclineAntitrichomonal AgentsAtrophyEsophagitisPore Forming Cytotoxic ProteinsGastric FundusMice, Inbred C57BLBacterial AdhesionPrevalencePenicillinsGenes, BacterialInterleukin-8Epithelial CellsPostgastrectomy SyndromesEsophagitis, PepticBase SequenceH(+)-K(+)-Exchanging ATPaseDuodenumRNA, Ribosomal, 16SAzure StainsNitroreductases