Cord Blood Stem Cell TransplantationFetal BloodTransplantation, HomologousHematopoietic Stem Cell TransplantationGraft SurvivalBone Marrow TransplantationHematopoietic Stem CellsTransplantation ChimeraGraft vs Host DiseaseMice, SCIDStem Cell TransplantationSpinal CordTransplantation ConditioningAntigens, CD34Mice, Inbred NODWhole-Body IrradiationInterleukin Receptor Common gamma SubunitTransplantation, HeterologousBlood CellsGraft Enhancement, ImmunologicHost vs Graft ReactionSevere Combined ImmunodeficiencyMice, Inbred C57BLT-LymphocytesFlow CytometryBone Marrow CellsSpinal Cord InjuriesRadiation ChimeraHematopoiesisChimerismCells, CulturedImmune SystemCell DifferentiationHematologic NeoplasmsMice, Inbred BALB CTime FactorsBusulfanErythrocytesRadiationSpleenUmbilical CordCell TransplantationHistocompatibility TestingBone MarrowBlood Cell CountStem CellsModels, AnimalLymphocyte DepletionColony-Forming Units AssayCell LineageMesenchymal Stromal CellsMesenchymal Stem Cell TransplantationGraft RejectionBlood BanksImmune ToleranceInfant, NewbornHistocompatibilityTransplantation, AutologousTissue DonorsRegenerationAntigens, CD45Disease Models, AnimalReceptors, CXCR4Lymphocyte ActivationLeukemiaCell SeparationCell ProliferationTransplantation, IsogeneicCell SurvivalMice, KnockoutChemokine CXCL12IsoantigensGreen Fluorescent ProteinsAntigens, CDPregnancyHematopoietic Stem Cell Mobilization