Nasal MucosaRespiratory MucosaMucous MembraneAdenoidsOlfactory MucosaMucociliary ClearanceEpitheliumRespiratory SystemMicroscopy, Electron, ScanningBacterial AdhesionAdministration, IntranasalOrgan Culture TechniquesHaemophilus influenzaeIntestinal MucosaGastric MucosaMouth MucosaEpithelium, CornealEpithelial CellsSeminiferous EpitheliumRetinal Pigment EpitheliumColonImmunohistochemistryLaryngeal MucosaMetaplasiaIntestine, SmallTracheaEsophagusDuodenumBronchiRNA, MessengerCorneaMicroscopy, ElectronIn Situ HybridizationPrecancerous ConditionsIleumCiliary BodyConjunctivaIntestinesCells, CulturedStomachMucinsReverse Transcriptase Polymerase Chain ReactionCell DifferentiationGastritisKeratinsHistocytochemistryTongueBarrett EsophagusImmunoenzyme TechniquesRabbitsMice, Inbred C57BLBiopsyCheekGene ExpressionMucusStomach UlcerChloridesMice, TransgenicLungMorphogenesisTime FactorsTurbinatesColitis, UlcerativeHelicobacter pyloriGene Expression Regulation, DevelopmentalWound HealingHyperplasiaDigestive SystemSignal TransductionVaginaFallopian TubesCell DivisionMicrovilliFluorescent Antibody TechniqueGoblet Cells