Gastric MucosaIntestinal MucosaGastritisStomach UlcerHelicobacter pyloriMouth MucosaHelicobacter InfectionsStomach DiseasesStomachStomach NeoplasmsGastric JuiceParietal Cells, GastricMetaplasiaNasal MucosaGastric AcidPyloric AntrumChoristomaGastritis, AtrophicGastrinsGastric MucinsPepsinogensAnti-Ulcer AgentsH(+)-K(+)-Exchanging ATPaseGastroscopyHelicobacterHydrochloric AcidMucous MembraneGastric FundusPentagastrinDuodenumPrecancerous ConditionsMeckel DiverticulumHistamineEthanolBiopsyRe-EpithelializationCathepsin EImmunohistochemistryUreaseIndomethacinMucusCimetidineRats, WistarPeptic Ulcer16,16-Dimethylprostaglandin E2Pepsin ABile RefluxColonDuodenal UlcerTetragastrinMetiamideMucinsOlfactory MucosaDinoprostoneProstaglandins E, SyntheticHelicobacter heilmanniiPylorusChief Cells, GastricAnti-Inflammatory Agents, Non-SteroidalLaryngeal MucosaOmeprazoleRats, Inbred StrainsPepsinogen ASucralfateHelicobacter felisRNA, MessengerEsophagusGastrointestinal HemorrhageAspirinEpithelial CellsBarrett EsophagusAdenocarcinomaHistamine H2 AntagonistsLewis Blood-Group SystemEndoscopy, GastrointestinalPteridiumImmersionEpitheliumEnterochromaffin CellsDyspepsiaRats, Sprague-DawleyGefarnateIntestine, SmallEsophageal DiseasesAlcohol-Induced DisordersIleumEnterochromaffin-like CellsHydrogen-Ion ConcentrationSwineI Blood-Group SystemCampylobacterCyclooxygenase 1Gastritis, HypertrophicSodium Pertechnetate Tc 99mDuodenogastric RefluxGastric FistulaProstaglandins EIntrinsic FactorReverse Transcriptase Polymerase Chain ReactionHyperplasia