Cord Blood Stem Cell TransplantationFetal BloodUmbilical CordBone MarrowHematopoietic Stem Cell TransplantationBone Marrow CellsStem CellsTransplantation ChimeraGraft vs Host DiseaseHematologic NeoplasmsTransplantation, HomologousTransplantation ConditioningHistocompatibility TestingTissue DonorsBone Marrow TransplantationHematopoietic Stem CellsBlood BanksBone and BonesSpinal CordAntigens, CD34Treatment OutcomeCell DifferentiationUmbilical VeinsInfant, NewbornStem Cell TransplantationUmbilical ArteriesCells, CulturedPregnancySpinal Cord InjuriesMesenchymal Stromal CellsColony-Forming Units AssayEmbryonic Stem CellsHematopoiesisCell SeparationFlow CytometryCell LineageGraft SurvivalAdult Stem CellsStem Cell FactorCell Culture TechniquesBone RemodelingBone Marrow DiseasesMesenchymal Stem Cell TransplantationAntigens, CDBone Marrow ExaminationMice, SCIDMaternal-Fetal ExchangeImmunophenotypingTime FactorsBone Marrow NeoplasmsPluripotent Stem CellsMultipotent Stem CellsTransplantation, AutologousCell ProliferationFetal Stem CellsStem Cell NicheLeukemiaTransplantsMice, Inbred NOD