LymphopoiesisHematopoietic Stem CellsStem CellsB-LymphocytesInterleukin-7HematopoiesisCell DifferentiationPrecursor Cells, B-LymphoidLymphoid Progenitor CellsLeukopoiesisCell LineageBone Marrow CellsThymus GlandB-Cell-Specific Activator ProteinMyelopoiesisMice, Inbred C57BLBone MarrowAntigens, CD34Cells, CulturedMyeloid Progenitor CellsReceptors, Interleukin-7Colony-Forming Units AssayMice, KnockoutFlow CytometryMice, TransgenicT-LymphocytesStromal CellsB-Lymphocyte SubsetsCell ProliferationGene Rearrangement, B-LymphocyteCell DivisionNeural Stem CellsGene Expression Regulation, DevelopmentalSignal TransductionSpleenAntigens, CDChemokine CXCL12Cell SeparationHomeodomain ProteinsStem Cell FactorFetusErythroid Precursor CellsThymocytesFetal BloodImmunophenotypingBone Marrow TransplantationLymphocytesBasic Helix-Loop-Helix Transcription FactorsMice, Mutant StrainsErythropoiesisTranscription FactorsProto-Oncogene Proteins c-kitKalanchoeHematopoiesis, ExtramedullaryIkaros Transcription FactorGranulocytesReceptors, NotchMice, Inbred BALB CPrecursor Cells, T-LymphoidMultipotent Stem CellsImmunoglobulin Light Chains, SurrogateMice, SCIDAntigens, CD19NeurogenesisPre-B Cell ReceptorsMyeloid CellsReceptors, Antigen, B-CellCoculture TechniquesCell LineCell SurvivalLymphopeniaGene Expression RegulationAgingStem Cell TransplantationTranscription Factor 7-Like 1 ProteinDNA-Binding ProteinsMembrane ProteinsRadiation ChimeraReceptor, Notch1Endothelial CellsAntigens, CD45PhenotypeYolk SacChemokines, CXCReverse Transcriptase Polymerase Chain ReactionHematopoietic Stem Cell TransplantationImmunoglobulin mu-ChainsOligodendrogliaGene ExpressionImmunoglobulin DNestinGranulocyte-Macrophage Progenitor Cellsfms-Like Tyrosine Kinase 3Cell CountDNA NucleotidylexotransferaseAntigens, LyGreen Fluorescent ProteinsAdult Stem CellsBase Sequencegamma Catenin