Intestinal MucosaLymphoid TissueGastric MucosaIntestine, SmallLymphoma, B-Cell, Marginal ZoneMouth MucosaPeyer's PatchesJejunumNasal MucosaPalatine TonsilIleumMucous MembraneLymph NodesIntestinesDuodenumColonImmunity, MucosalCeliac DiseaseSpleenIntestinal DiseasesIntestinal AbsorptionEnterocytesChemokine CCL21MesenteryB-LymphocytesT-LymphocytesGerm-Free LifeIntestine, LargeLymphocytesImmunohistochemistryImmunoglobulin AMice, Inbred C57BLSucraseSwineBacterial TranslocationChemokine CXCL13Mice, Inbred BALB CMicrovilliEpitheliumEnteritisCD4-Positive T-LymphocytesGliadinDendritic CellsMucoproteinsDigestive SystemIntestinal SecretionsThymus GlandAppendixInflammatory Bowel DiseasesLymphCecumCrohn DiseaseRNA, MessengerGlutensColitis, UlcerativeLymphotoxin-betaLaryngeal MucosaLymphocyte ActivationAdministration, OralReceptors, CXCR5Chemokine CCL19ChoristomaRats, Inbred StrainsLymphotoxin beta ReceptorBiopsyHelicobacter pyloriCell MovementImmunoenzyme TechniquesEpithelial CellsColitisCaco-2 CellsPlasma CellsImmunoglobulin A, SecretoryStomach NeoplasmsReceptors, CCR7LiverHelicobacter InfectionsFlow CytometryGastrointestinal TractBacterial AdhesionDisease Models, AnimalIleitisOlfactory MucosaLymphotoxin-alphaMicroscopy, ElectronDisaccharidasesIntestinal NeoplasmsT-Lymphocyte SubsetsImmunophenotypingMice, KnockoutImmunoglobulinsTime FactorsAdenoidsCD8-Positive T-LymphocytesReceptors, ChemokinePermeabilityRabbitsRats, WistarTrichostrongylosisGastritis