GastritisCrohn DiseaseHelicobacter pyloriDuodenoscopyHelicobacter InfectionsHelicobacterGastritis, AtrophicBacteriaGastric MucosaUreaseStomachPyloric AntrumHelicobacter heilmanniiHelicobacter hepaticusBacterial ProteinsStomach NeoplasmsPeptic UlcerGastroscopyMetaplasiaNod2 Signaling Adaptor ProteinDyspepsiaStomach DiseasesPepsinogen AStomach UlcerAmoxicillinGram-Negative BacteriaGastritis, HypertrophicClarithromycinAntigens, BacterialAnti-Ulcer AgentsMetronidazoleGram-Positive BacteriaDNA, BacterialOmeprazoleAnti-Bacterial AgentsRNA, Ribosomal, 16SAchlorhydriaMolecular Sequence DataBiopsyInflammatory Bowel DiseasesGastrinsBacteria, AnaerobicAntibodies, BacterialBismuthColitis, UlcerativePepsinogen CDuodenitisPhylogenyBile RefluxDNA, RibosomalParietal Cells, Gastric2-PyridinylmethylsulfinylbenzimidazolesPolymerase Chain ReactionSequence Analysis, DNABreath TestsChronic DiseaseEndoscopy, GastrointestinalPepsinogensGastric JuiceLansoprazoleGenes, BacterialIntestinal MucosaBacteria, AerobicCampylobacterProton Pump InhibitorsIntestinesGastric AcidColony Count, MicrobialEscherichia coliDrug Therapy, CombinationHelicobacter felisBacterial AdhesionDuodenal UlcerGerbillinaePrecancerous ConditionsGene Expression Regulation, BacterialAnemia, PerniciousGenome, BacterialSpecialties, NursingRNA, BacterialBase SequenceLewis Blood-Group SystemTinidazoleVirulenceGram-Negative Anaerobic BacteriaAcinonyxEndoscopyLymphoma, B-Cell, Marginal ZoneCytotoxinsEndoscopy, Digestive SystemSpecies SpecificityAntacidsWater MicrobiologyGenotypeAmino Acid SequenceUreaCase-Control StudiesFecesRanitidineVirulence Factors