Protein PrecursorsPrecursor Cells, T-LymphoidCell DifferentiationStem CellsHematopoietic Stem CellsThymus GlandAmyloid beta-Protein PrecursorCell LineagePrecursor Cells, B-LymphoidB-LymphocytesLymphopoiesisCells, CulturedBone Marrow CellsEnzyme PrecursorsMice, Inbred C57BLMolecular Sequence DataRNA PrecursorsT-LymphocytesCerebellumMice, TransgenicAmino Acid SequenceGene Expression Regulation, DevelopmentalCell DivisionBase SequenceSchwann CellsMice, KnockoutBone MarrowInterleukin-7Flow CytometryNucleic Acid PrecursorsSpleenMycobacterium lepraemuriumCell SeparationAntigens, CDDendritic CellsAmyloid Precursor Protein SecretasesCell MovementBasic Helix-Loop-Helix Transcription FactorsMice, Inbred BALB CB-Lymphocyte SubsetsPhenotypeGene Rearrangement, B-LymphocytePrecursor B-Cell Lymphoblastic Leukemia-LymphomaSignal TransductionLymphocyte ActivationRNA, MessengerIn Situ HybridizationNeuronsMutationCell CountProtein Processing, Post-TranslationalPlasma CellsTranscription FactorsImmunophenotypingCell ProliferationCell LineAntigens, CD34Clone CellsGranulocyte Precursor CellsImmunohistochemistryHedgehog ProteinsAntibody-Producing CellsAntigens, CD7Receptors, Antigen, B-CellMembrane ProteinsReceptors, Interleukin-7Lymphocyte CountHomeodomain ProteinsFetusLeukemia, LymphoidImmunologic MemoryNeprilysinMice, Mutant StrainsDNA NucleotidylexotransferaseCD8-Positive T-LymphocytesReceptors, Antigen, T-CellThymocytesTime FactorsMice, Inbred StrainsNeural CrestColony-Forming Units AssayThoracic DuctReceptors, NotchImmunoglobulin Light Chains, SurrogateCell SurvivalCloning, MolecularMast CellsTranscription Factor Brn-3Lymphoid TissueKineticsRadiation ChimeraImmunoglobulin Heavy ChainsDNA-Binding ProteinsGerm CellsGenes, RAG-1Antigens, CD19Gene Expression RegulationKiller Cells, NaturalTranscription Factor 7-Like 1 ProteinMice, Inbred CBA