Helicobacter felisHelicobacterHelicobacter pyloriHelicobacter InfectionsUreaseGastric MucosaRickettsia felisStomachGastritisHelicobacter hepaticusHelicobacter heilmanniiBacterial ProteinsCat DiseasesFelisDNA, BacterialMolecular Sequence DataStomach NeoplasmsParietal Cells, GastricCatsGene Expression Regulation, BacterialNickelDog DiseasesAntigens, BacterialSiphonapteraAntibodies, BacterialCtenocephalidesGenes, BacterialVirulence FactorsGenome, BacterialDogsBacterial AdhesionRNA, Ribosomal, 16SHydrogen-Ion ConcentrationRickettsia InfectionsBase SequenceAmino Acid SequenceFlea InfestationsClarithromycinPeptic UlcerMetronidazoleMice, Inbred C57BLAmoxicillinSequence Homology, Amino AcidMutationStomach DiseasesDyspepsiaAnti-Ulcer AgentsOmeprazoleChlamydophilaPiroplasmida