UreaseHelicobacter pyloriGastritisHelicobacter InfectionsHelicobacterGastritis, AtrophicGastric MucosaStomachPyloric AntrumPeptic UlcerStomach NeoplasmsDyspepsiaHelicobacter heilmanniiAmoxicillinHelicobacter hepaticusGastroscopyClarithromycinStomach DiseasesMetronidazoleBacterial ProteinsAnti-Ulcer AgentsStomach UlcerMetaplasiaOmeprazolePepsinogen ABismuthGastritis, HypertrophicBreath TestsDuodenal UlcerAntibodies, BacterialUreaGastrinsBiopsyAntigens, BacterialDuodenitisAchlorhydriaAnti-Bacterial AgentsPepsinogen CEndoscopy, GastrointestinalLansoprazoleProton Pump InhibitorsPylorusCampylobacterDrug Therapy, CombinationDNA, BacterialPepsinogensNickelGastric JuiceParietal Cells, GastricGastric Acid2-PyridinylmethylsulfinylbenzimidazolesTinidazoleGerbillinaeChronic DiseaseCanavaliaBile RefluxPolymerase Chain ReactionLewis Blood-Group SystemMolecular Sequence DataRanitidineCytotoxinsEndoscopy, Digestive SystemHelicobacter felisAntacidsLymphoma, B-Cell, Marginal ZoneFurazolidonePrecancerous ConditionsEndoscopyImmunoglobulin GGastric MucinsGenes, BacterialGastrointestinal DiseasesAnemia, PerniciousVirulenceAntitrichomonal AgentsVirulence FactorsTetracyclineGastric Acidity DeterminationOrganometallic CompoundsHelicobacter mustelaeGastroesophageal RefluxAcinonyxEnzyme-Linked Immunosorbent AssayHydrogen-Ion ConcentrationPeptic Ulcer HemorrhagePenicillinsBacterial AdhesionRNA, Ribosomal, 16SAtrophyPrevalenceEsophagitisGastric FundusSequence Analysis, DNABase SequenceGene Expression Regulation, BacterialSensitivity and SpecificityColony Count, MicrobialProteus mirabilisEsophagitis, PepticDuodenum