Hematopoietic Stem CellsCell AdhesionHematopoietic Stem Cell TransplantationStem CellsFibronectinsCells, CulturedUmbilical VeinsHematopoiesisCell DifferentiationStem Cell TransplantationUmbilical ArteriesFetal BloodBone Marrow CellsAntigens, CD34Cell LineageTransplantation, HomologousStem Cell NicheHematopoietic Stem Cell MobilizationColony-Forming Units AssayEmbryonic Stem CellsAdult Stem CellsHuman Umbilical Vein Endothelial CellsFlow CytometryMice, Inbred C57BLCell SeparationBone MarrowStem Cell FactorCell ProliferationMultipotent Stem CellsPluripotent Stem CellsMesenchymal Stromal CellsCord Blood Stem Cell TransplantationEndothelium, VascularGraft vs Host DiseaseTransplantation ConditioningCell Culture TechniquesMice, SCIDEndothelial CellsBone Marrow TransplantationMesenchymal Stem Cell TransplantationHematologic NeoplasmsTransplantation, AutologousHematopoietic SystemMesonephrosInduced Pluripotent Stem CellsUmbilical CordNeural Stem CellsTime FactorsAntigens, CDCell DivisionFetal Stem CellsTransplantation ChimeraMice, Inbred NODProto-Oncogene Proteins c-kitCell MovementSignal TransductionGraft SurvivalCell LineWhole-Body IrradiationCell SurvivalTransduction, GeneticLentivirusCoculture TechniquesT-LymphocytesSpleenGenetic VectorsChimerismLeukemiaNeoplastic Stem CellsStromal CellsGranulocyte Colony-Stimulating FactorReverse Transcriptase Polymerase Chain ReactionMyeloid Progenitor CellsMice, KnockoutHernia, UmbilicalRetroviridaeCell CountGene Expression RegulationPeripheral Blood Stem Cell TransplantationTissue DonorsMice, TransgenicLymphopoiesisHematopoiesis, ExtramedullaryPhenotypeRNA, MessengerRadiation ChimeraModels, BiologicalAntigens, CD38Green Fluorescent ProteinsImmunophenotypingFetusGene ExpressionRegenerationGenetic TherapyGranulocytesCell CycleEmbryo, MammalianHistocompatibility TestingClone CellsThrombopoietin