MetaplasiaBarrett EsophagusEpitheliumEsophagusGoblet CellsPrecancerous ConditionsEsophagoscopyEsophagogastric JunctionEsophageal NeoplasmsMucinsEpithelial CellsGastroesophageal RefluxCystsIntestinesImmunohistochemistryIntestinal MucosaAdenocarcinomaAneuploidyMicroscopy, ElectronCell DifferentiationGastric MucosaEpithelium, CornealMucous MembraneGastritisCardiaStomach NeoplasmsStomachGastritis, AtrophicCactaceaePrimary MyelofibrosisRespiratory MucosaBiopsyMucin-2Helicobacter InfectionsKeratinsHelicobacter pyloriSeminiferous EpitheliumHyperplasiaMucin 5ACMucusBronchiRetinal Pigment EpitheliumTracheaOlfactory MucosaDuodenumDuodenitisAlcian BlueKeratin-7Esophageal DiseasesHistocytochemistryOssification, HeterotopicGastroscopyMucin-6Pyloric AntrumChief Cells, GastricNasal MucosaLungKeratin-20Homeodomain ProteinsIn Situ HybridizationCiliaIntestine, SmallMicroscopy, Electron, ScanningCervix UteriCell Transformation, NeoplasticRNA, MessengerPeriodic Acid-Schiff ReactionMice, TransgenicBreast DiseasesImmunoenzyme TechniquesCorneaGastric MucinsConjunctivaColonMice, Inbred C57BLCells, CulturedStomach Diseases