Immunologic MemoryLymphocyte SubsetsT-Lymphocyte SubsetsLymphocytesCD4-CD8 RatioT-LymphocytesLymphocyte ActivationLymphocyte CountLeukocyte CountCD4-Positive T-LymphocytesPhenotypeFlow CytometryAntigens, CD3CD8-Positive T-LymphocytesT-Lymphocytes, Helper-InducerImmunophenotypingAntigens, CD8T-Lymphocytes, RegulatoryAntibodies, MonoclonalAntigens, CD45Killer Cells, NaturalAntigens, CDImmunity, CellularSpleenHLA-DR AntigensReceptors, Antigen, T-Cell, gamma-deltaB-LymphocytesT-Lymphocytes, CytotoxicMice, Inbred BALB CCytotoxicity, ImmunologicCells, CulturedB-Lymphocyte SubsetsInterleukin-2Mice, Inbred C57BLAntigens, Differentiation, T-LymphocytePhytohemagglutininsInterferon-gammaAntigens, SurfaceAntigens, CD4Lymph NodesLymphocytes, Tumor-InfiltratingMolecular Sequence DataThymus GlandCytokinesConcanavalin ACell SeparationLymphocyte Culture Test, MixedReceptors, Antigen, T-CellClone CellsLymphopeniaRosette FormationCell LineMitogensLymphocyte DepletionCell DifferentiationLymphoid TissueReceptors, Antigen, T-Cell, alpha-betaMutationLymphocytes, NullCD4 Lymphocyte CountReceptors, Interleukin-2Leukocytes, MononuclearAntigens, DifferentiationTime FactorsMice, KnockoutAmino Acid SequenceMembrane GlycoproteinsEpitopesCell DivisionMonocytesImmunoglobulinsDendritic CellsRNA, MessengerAntigens, CD57Base SequenceHistocompatibility AntigensMice, TransgenicAntigens, CD19Signal TransductionCytotoxicity Tests, ImmunologicHIV-1Mice, Inbred StrainsInterleukin-4Jurkat CellsFluorescent Antibody TechniqueReceptors, Antigen, B-CellAntigens, CD56Cell MovementLymphocyte TransfusionMacrophagesImmune ToleranceImmunoglobulin GLymphocyte CooperationApoptosisPokeweed MitogensAntigens, CD28Antigens, CD2LeukocytesGene Expression RegulationHIV Infections