Fetal BloodUmbilical CordCord Blood Stem Cell TransplantationSpinal CordUmbilical VeinsUmbilical ArteriesBlood BanksSpinal Cord InjuriesInfant, NewbornAntigens, CD34PregnancyHematopoietic Stem CellsHernia, UmbilicalCells, CulturedMaternal-Fetal ExchangeHematopoietic Stem Cell TransplantationCell DifferentiationMesenchymal Stromal CellsCell SeparationBlood PreservationCell Culture TechniquesGestational AgeGraft vs Host DiseaseHuman Umbilical Vein Endothelial CellsHistocompatibility TestingPlacentaStem CellsColony-Forming Units AssayAntigens, CDMice, SCIDTransplantation ConditioningNuchal CordUmbilicusFlow CytometryUrachal CystImmunophenotypingFetusAntigens, CD38Mice, Inbred NODHematologic NeoplasmsSpinal Cord DiseasesADP-ribosyl CyclaseEndothelial CellsUltrasonography, PrenatalDonor SelectionBone Marrow CellsSpinal Cord CompressionBlood Cell CountUnrelated DonorsCell LineageEndothelium, VascularWharton JellyTransplantation, HomologousGraft SurvivalBlood CellsFetal Stem CellsHematopoiesisAmniotic FluidLeukocytes, MononuclearTime FactorsMaternal ExposureCoculture TechniquesSpermatic CordNAD+ NucleosidaseTransplantation ChimeraCryopreservationSpinal Cord NeoplasmsStem Cell FactorSpinal Cord IschemiaMyeloablative AgonistsInfant, PostmatureBlood DonorsCell ProliferationFetal HypoxiaTransplantation, HeterologousAntigens, CD45Fetal DiseasesHLA AntigensTissue DonorsLeukemiaCesarean SectionHematologic DiseasesStem Cell TransplantationInfant, PrematureBlood Transfusion, AutologousDelivery, ObstetricPregnancy OutcomeFetal Growth RetardationBirth WeightErythroid Precursor CellsLeukodystrophy, MetachromaticCell DivisionBlood Specimen CollectionAllograftsN-Acetylgalactosamine-4-SulfataseTreatment OutcomeCytokinesBiological MarkersT-LymphocytesTransplants