Hematopoietic Stem CellsEndothelial CellsStem CellsHematopoietic Stem Cell TransplantationCells, CulturedCell DifferentiationAntigens, CD34HematopoiesisCell LineageBone Marrow CellsColony-Forming Units AssayCell ProliferationHematopoietic Stem Cell MobilizationMice, Inbred C57BLStem Cell TransplantationMyeloid Progenitor CellsFlow CytometryUmbilical VeinsAdult Stem CellsNeural Stem CellsBone MarrowMultipotent Stem CellsEndotheliumCell MovementNeovascularization, PhysiologicFetal BloodHuman Umbilical Vein Endothelial CellsCell SeparationStem Cell NicheEndothelium, VascularSignal TransductionStem Cell FactorCell DivisionTransplantation, HomologousNeoplastic Stem CellsAntigens, CDCell AdhesionMice, TransgenicMice, KnockoutCell CountGranulocyte Colony-Stimulating FactorLymphoid Progenitor CellsErythroid Precursor CellsBone Marrow TransplantationMice, SCIDProto-Oncogene Proteins c-kitTime FactorsGene Expression Regulation, DevelopmentalFetal Stem CellsCell SurvivalChemokine CXCL12Cell Culture TechniquesRNA, MessengerMesenchymal Stromal CellsCell LineRegenerationHematopoietic SystemReverse Transcriptase Polymerase Chain ReactionGene Expression RegulationCoculture TechniquesVascular Endothelial Growth Factor AImmunohistochemistryTransplantation, AutologousGranulocytesApoptosisAntigens, CD31NeurogenesisAortaPhenotypeNestinInterleukin-3Transduction, GeneticVascular Endothelial Growth Factor Receptor-2Embryo, MammalianHomeodomain ProteinsMice, Inbred NODGene ExpressionTranscription FactorsCattleStromal CellsGreen Fluorescent ProteinsRetroviridaeGraft vs Host DiseaseNeovascularization, PathologicMesonephrosBlood CellsLymphopoiesisRecombinant ProteinsBiological MarkersGenetic VectorsMegakaryocytesPluripotent Stem CellsPlant StemsGraft SurvivalTransplantation ConditioningLentivirusBasic Helix-Loop-Helix Transcription FactorsMyelopoiesisErythropoiesisNeurons