Blood BanksFetal BloodUmbilical CordBlood DonorsCord Blood Stem Cell TransplantationBlood Transfusion, AutologousSpinal CordDonor SelectionUmbilical VeinsInfant, NewbornOocyte DonationBlood TransfusionAntigens, CD34Umbilical ArteriesBlood SafetyPregnancySpinal Cord InjuriesHematopoietic Stem CellsAltruismTissue and Organ ProcurementObstetric Surgical ProceduresTissue DonorsDirected Tissue DonationMaternal-Fetal ExchangeHematopoietic Stem Cell TransplantationCells, CulturedBlood PreservationCell DifferentiationHistocompatibility TestingCell SeparationGraft vs Host DiseaseMesenchymal Stromal CellsCell Culture TechniquesPlateletpheresisColony-Forming Units AssayHernia, UmbilicalStem CellsTransplantation ConditioningMice, SCIDAntigens, CDImmunophenotypingGestational AgeAntigens, CD38Flow CytometryPlacentaMice, Inbred NODNuchal CordHematologic NeoplasmsErythrocyte CountTime FactorsUrachal CystUnrelated DonorsGraft SurvivalPhlebotomyADP-ribosyl CyclaseBlood Cell CountTransplantation, HomologousBone Marrow CellsFetusCryopreservationBrain DeathCompensation and RedressCell LineageBlood CellsProspective StudiesBlood-Borne PathogensBlood Loss, SurgicalHematopoiesisFetal Stem CellsLeukocytes, MononuclearMaternal ExposureNAD+ NucleosidaseTransplantation ChimeraPreoperative CareWharton JellyAmniotic FluidMotivationCoculture TechniquesLiving DonorsStem Cell FactorIronFerritinsHuman Umbilical Vein Endothelial CellsEndothelial CellsMyeloablative AgonistsRetrospective StudiesInfant, PostmatureSpinal Cord DiseasesHLA AntigensUltrasonography, PrenatalAntigens, CD45LeukemiaDeathHematologic DiseasesTransplantation, HeterologousUmbilicusSpinal Cord CompressionCell ProliferationGift GivingHemoglobins