Stem CellsHematopoietic Stem CellsCell DifferentiationEndothelial CellsCells, CulturedCell LineageAntigens, CD34Colony-Forming Units AssayBone Marrow CellsCell ProliferationFlow CytometryMice, Inbred C57BLImmunohistochemistryStem Cell TransplantationEmbryonic Stem CellsAdult Stem CellsNeuronsStem Cell NicheNeural Stem CellsHematopoietic Stem Cell TransplantationPluripotent Stem CellsMultipotent Stem CellsStem Cell FactorUmbilical VeinsInduced Pluripotent Stem CellsEndotheliumHuman Umbilical Vein Endothelial CellsSignal TransductionCell MovementHematopoiesisMesenchymal Stromal CellsCell SeparationMesenchymal Stem Cell TransplantationCell DivisionNeovascularization, PhysiologicEndothelium, VascularMice, TransgenicLymphopoiesisCell Culture TechniquesThymus GlandGene Expression Regulation, DevelopmentalAntigens, CDProto-Oncogene Proteins c-kitMice, KnockoutCell AdhesionCell LineGene Expression RegulationFetal Stem CellsFetal BloodRNA, MessengerBone MarrowReverse Transcriptase Polymerase Chain ReactionMyeloid Progenitor CellsCell CountCell SurvivalReceptors, NotchHematopoietic Stem Cell MobilizationEmbryo, MammalianCoculture TechniquesRegenerationMast CellsTranscription FactorsTime FactorsPrecursor Cells, T-LymphoidPhenotypeHomeodomain ProteinsNeoplastic Stem CellsStem Cell ResearchVascular Endothelial Growth Factor AGranulocyte-Macrophage Progenitor CellsCattleApoptosisPlant StemsMice, SCIDGene ExpressionPrecursor Cells, B-LymphoidAortaImmunophenotypingBiological MarkersAntigens, CD31Models, BiologicalStromal CellsMice, Inbred BALB CFetusBasic Helix-Loop-Helix Transcription FactorsNeovascularization, PathologicGreen Fluorescent ProteinsGene Expression ProfilingT-LymphocytesBone Marrow TransplantationClone CellsCapillariesNestinLymphoid Progenitor CellsNeurogenesisRecombinant ProteinsB-LymphocytesBase SequenceMembrane ProteinsVascular Endothelial Growth Factor Receptor-2