LymphocytesT-Lymphocytes, Helper-InducerT-LymphocytesLymphocyte ActivationLeukocyte CountT-Lymphocytes, RegulatoryT-Lymphocytes, CytotoxicAntibodies, MonoclonalAntigens, SurfaceB-LymphocytesAntigens, Differentiation, T-LymphocyteHLA-DR AntigensInterleukin-2Helper VirusesCD4-CD8 RatioImmunity, CellularClone CellsImmunoenzyme TechniquesLymphocyte SubsetsCD4-Positive T-LymphocytesHistocompatibility Antigens Class IILymphocyte CountCytotoxicity, ImmunologicCells, CulturedSpleenCD8-Positive T-LymphocytesT-Lymphocyte SubsetsFlow CytometryMice, Inbred C57BLMice, Inbred BALB CLymphocyte Culture Test, MixedAntigens, CD3Interferon-gammaPhytohemagglutininsConcanavalin AReceptors, Antigen, T-CellAntigens, CDLymphocytes, Tumor-InfiltratingCell LineCytokinesTh2 CellsEpitopesTh1 CellsMolecular Sequence DataLymph NodesThymus GlandCytotoxicity Tests, ImmunologicJurkat CellsImmunophenotypingInterleukin-4Killer Cells, NaturalLymphocyte TransfusionCell DifferentiationMitogensLymphocyte DepletionLymphocyte CooperationImmunologic MemoryCell SeparationMice, Inbred StrainsDendritic CellsRosette FormationAntigens, CD4AntigensAntibody FormationEpitopes, T-LymphocyteCell DivisionAmino Acid SequenceMembrane GlycoproteinsAntigens, CD45Mice, KnockoutRNA, MessengerAntigen-Presenting CellsApoptosisMacrophagesSignal TransductionBase SequenceAntigens, NeoplasmMonocytesH-2 AntigensLeukocytes, MononuclearLymphocyte Function-Associated Antigen-1Histocompatibility AntigensReceptors, Interleukin-2Receptors, Antigen, T-Cell, alpha-betaReceptors, Lymphocyte HomingImmune ToleranceAntigens, CD8Mice, TransgenicAntigen PresentationHLA-A2 AntigenImmunoglobulinsReceptors, Antigen, T-Cell, gamma-deltaImmunoglobulin GHIV-1Time FactorsGene Expression RegulationLymphoid TissueHistocompatibility Antigens Class IAntigens, CD28Pokeweed Mitogens