IntestinesIntestinal MucosaImmunity, MucosalPeyer's PatchesImmune SystemImmunoglobulin A, SecretoryIntestinal SecretionsImmunoglobulin ATyphoid-Paratyphoid VaccinesInflammatory Bowel DiseasesImmune ToleranceIntestine, SmallGerm-Free LifeAntibody-Producing CellsThoracic DuctToxoidsImmunity, InnateEscherichia coli VaccinesColitisLymphoid TissueDendritic CellsMesenteryOptics and PhotonicsCytokinesAdministration, OralMice, Inbred C57BLMetagenomeCholera ToxinT-LymphocytesMice, Inbred BALB CIleumAntibody FormationLymph NodesNod2 Signaling Adaptor ProteinFecesImmunizationColonSpleenT-Lymphocytes, RegulatoryCD4-Positive T-LymphocytesMice, KnockoutAntibodies, BacterialHomeostasisInflammationInterleukin-10Colitis, UlcerativeAntigens, BacterialDisease Models, AnimalImmune EvasionAntigen-Antibody ComplexImmune SeraImmunity, CellularImmunityImmune Complex DiseasesImmune System DiseasesImmunoglobulin GLymphocyte ActivationInterferon-gammaAdaptive ImmunityImmunity, HumoralAdjuvants, ImmunologicMacrophagesCells, CulturedB-LymphocytesImmune System ProcessesFlow CytometryEnzyme-Linked Immunosorbent AssayLymphocytesAntibodies, ViralModels, ImmunologicalSignal TransductionAntigensTh1 CellsKiller Cells, NaturalToll-Like ReceptorsVaccinationHypersensitivity, DelayedTh2 CellsImmunotherapyImmunoglobulin MMolecular Sequence DataT-Lymphocyte SubsetsLipopolysaccharidesLeukocytes, MononuclearAntigens, CDCell LineImmunoglobulinsVaccines, DNAT-Lymphocytes, CytotoxicHost-Pathogen InteractionsEpitopesAutoimmune DiseasesImmunity, ActiveMice, TransgenicImmunologic MemoryGene Expression RegulationImmunization, PassiveAntibodiesTime FactorsImmunologic Factors