T-Lymphocytes, Helper-InducerLymphocyte ActivationLymphocytesHelper VirusesT-LymphocytesImmune SystemLymphocyte SubsetsB-LymphocytesLymphocyte CountSpleenCD4-Positive T-LymphocytesImmune ToleranceMice, Inbred BALB CMice, Inbred C57BLCells, CulturedImmunity, CellularInterferon-gammaCytokinesLymphocyte Culture Test, MixedT-Lymphocytes, CytotoxicFlow CytometryTh2 CellsTh1 CellsAntibody FormationT-Lymphocyte SubsetsInterleukin-2Cytotoxicity, ImmunologicLymphocytes, Tumor-InfiltratingPhytohemagglutininsLeukocyte CountImmunoglobulin GConcanavalin AImmunity, InnateLymph NodesAntigens, CDAntibodies, MonoclonalInterleukin-4Lymphocyte TransfusionDendritic CellsT-Lymphocytes, RegulatoryKiller Cells, NaturalAntigensAntigens, CD3Immune SeraCell LineCD8-Positive T-LymphocytesEpitopesAntigens, Differentiation, T-LymphocyteLymphocyte DepletionMice, KnockoutMolecular Sequence DataThymus GlandAntigens, SurfaceImmunoglobulinsMacrophagesAntigen-Antibody ComplexImmunityMice, Inbred StrainsImmunophenotypingImmunizationClone CellsMitogensReceptors, Antigen, T-CellCell DifferentiationImmunologic MemoryImmunoglobulin MCytotoxicity Tests, ImmunologicRosette FormationLeukocytes, MononuclearCell Separation