Cord Blood Stem Cell TransplantationFetal BloodTissue DonorsTransplant Donor SiteHistocompatibility TestingBone MarrowUmbilical CordBone Marrow CellsRegistriesLiving DonorsBone Marrow TransplantationHematopoietic Stem Cell TransplantationGraft vs Host DiseaseTransplantation ChimeraTransplantation, HomologousHematologic NeoplasmsTransplantation ConditioningTissue and Organ ProcurementKidney TransplantationBone and BonesHematopoietic Stem CellsHLA AntigensBlood BanksTreatment OutcomeAntigens, CD34Umbilical VeinsUmbilical ArteriesInfant, NewbornBone Marrow DiseasesBone Marrow ExaminationCells, CulturedPregnancyCell DifferentiationBone Marrow NeoplasmsColony-Forming Units AssayGraft SurvivalSpinal CordHematopoiesisBone RemodelingFlow CytometryCell SeparationTime FactorsBlood DonorsStem CellsBone Marrow PurgingLeukemiaMesenchymal Stromal CellsImmunophenotypingAntigens, CDAnemia, AplasticTransplants