B-Lymphocyte SubsetsLymphocyte SubsetsReceptors, Antigen, B-CellB-LymphocytesLymphocytesLymphocyte ActivationLymphocyte CountT-LymphocytesT-Lymphocyte SubsetsCD4-CD8 RatioFlow CytometryLeukocyte CountImmunophenotypingSpleenCD4-Positive T-LymphocytesKiller Cells, NaturalCD8-Positive T-LymphocytesAntigens, CDAntibodies, MonoclonalPalatine TonsilT-Lymphocytes, Helper-InducerCells, CulturedAntigens, CD3Antigens, CD45Antigens, CD19Immunoglobulin MLymph NodesMice, Inbred C57BLPhytohemagglutininsInterleukin-2Immunity, CellularMice, Inbred BALB CImmunoglobulinsRosette FormationAntigens, Differentiation, T-LymphocyteMitogensCell SeparationAntigens, SurfaceT-Lymphocytes, RegulatoryLymphopeniaAntigens, CD8Lymphoid TissueCytotoxicity, ImmunologicThymus GlandT-Lymphocytes, CytotoxicConcanavalin ALymphocytes, Tumor-InfiltratingImmunoglobulin GAntigens, CD4Lymphocyte Culture Test, MixedPokeweed MitogensCytokinesInterferon-gammaAntibody FormationLymphocyte DepletionLymphocyte CooperationAntigens, CD5Cell DifferentiationLymphocytes, NullHerpesvirus 4, HumanHLA-DR AntigensReceptors, Antigen, T-Cell, gamma-deltaImmunologic MemoryCell LineInterleukin-4Immunoglobulin DCD4 Lymphocyte CountAntigens, DifferentiationFluorescent Antibody TechniqueMolecular Sequence DataClone CellsLeukocytes, MononuclearPhenotypeImmune Adherence ReactionTime FactorsMonocytesCell DivisionAntigens, CD57LeukocytesImmunologic Deficiency SyndromesLymphocyte TransfusionReceptors, Interleukin-2Histocompatibility AntigensMice, Inbred StrainsLeukemia, LymphoidMembrane GlycoproteinsAntigens, CD20Antigens, CD56Immune ToleranceAntigens, Differentiation, B-LymphocyteB-Cell Activating FactorAppendixMice, KnockoutHistocompatibility Antigens Class IILymphocytosisSignal TransductionReceptors, Antigen, T-Cell, alpha-betaBone MarrowReceptors, Antigen, T-CellRNA, Messenger