Infant, NewbornAnimals, NewbornImmune SystemInfant, Newborn, DiseasesNeonatal ScreeningImmune ToleranceImmunity, InnateImmune EvasionImmune SeraAntigen-Antibody ComplexMice, Inbred C57BLImmunity, CellularT-LymphocytesPregnancyMice, Inbred BALB CImmunoglobulin GImmunityCytokinesAntibody FormationLymphocyte ActivationImmune Complex DiseasesImmune System DiseasesSpleenInterferon-gammaDendritic CellsAdaptive ImmunityCD4-Positive T-LymphocytesCells, CulturedImmunizationMice, KnockoutDisease Models, AnimalMacrophagesInfant, PrematureImmunity, HumoralFetal BloodB-LymphocytesAdjuvants, ImmunologicEnzyme-Linked Immunosorbent AssayAntibodies, ViralTime FactorsInfant CareLymphocytesFlow CytometryImmune System ProcessesGestational AgeRespiratory Distress Syndrome, NewbornSignal TransductionInflammationAntigensImmunoglobulin MMolecular Sequence DataModels, ImmunologicalMaternal-Fetal ExchangeTh1 CellsVaccinationImmunity, MucosalKiller Cells, NaturalImmunoglobulin AImmunity, Maternally-AcquiredToll-Like ReceptorsAsphyxia NeonatorumT-Lymphocytes, RegulatoryAntibodies, BacterialLungSwineMice, TransgenicCell LineHypersensitivity, DelayedTh2 CellsImmunoglobulinsLipopolysaccharidesLeukocytes, MononuclearT-Lymphocyte SubsetsImmunotherapyGene Expression RegulationAntigens, CDInterleukin-10Birth WeightImmunization, PassiveLymph NodesRNA, MessengerNeonatologyVaccines, DNAJaundice, NeonatalAntibodiesEpitopesMice, Inbred StrainsT-Lymphocytes, CytotoxicAgingErythroblastosis, FetalMice, Inbred C3HAmino Acid SequenceAntigens, BacterialAntibodies, MonoclonalImmunosuppressionMonocytesNurseries, HospitalImmunologic MemoryHost-Pathogen InteractionsMembrane Glycoproteins