Helicobacter pyloriHelicobacter InfectionsGastric AcidOmeprazoleAnti-Ulcer AgentsAmoxicillinClarithromycinGastric Mucosa2-PyridinylmethylsulfinylbenzimidazolesBismuthMetronidazoleDuodenal UlcerLansoprazolePentagastrinTinidazoleProton Pump InhibitorsGastrinsGastritisPeptic UlcerGastric JuiceVirulenceRanitidineDrug Therapy, CombinationDyspepsiaAnti-Bacterial AgentsStomachRabeprazoleFurazolidoneAntacidsStomach UlcerParietal Cells, GastricHelicobacterHistamine H2 AntagonistsVirulence FactorsBreath TestsSulfoxidesAntitrichomonal AgentsUreaseStomach NeoplasmsPyloric AntrumBethanechol CompoundsGastroscopyPenicillinsAchlorhydriaGastric Acidity DeterminationBenzimidazolesBacterial ProteinsHistamineSecretory RateGastritis, AtrophicLymphoma, B-Cell, Marginal ZoneCimetidinePeptonesEsophagitis, PepticGastroesophageal RefluxTetracyclineStomach DiseasesAminopyrineH(+)-K(+)-Exchanging ATPaseMetaplasiaVagotomyUreaFamotidineTreatment OutcomeEsomeprazoleEndoscopy, GastrointestinalMetiamideTetragastrinDuodenitisGastric FistulaOrganometallic CompoundsLevofloxacinEsophagitisAntigens, BacterialVagotomy, Proximal GastricNifuratelYogurtAnti-Infective AgentsVagus NerveProspective StudiesBethanecholDisease EradicationOfloxacinPylorusHydrogen-Ion ConcentrationSomatostatinPepsinogen ADrug Administration ScheduleDrug Resistance, BacterialDanazolEndoscopyRifabutinAntibodies, BacterialEnterochromaffin-like CellsGastric EmptyingBenzoxepinsTreatment FailurePepsinogensMolecular Sequence DataGene Expression Regulation, Bacterial