Fetal BloodUmbilical CordCord Blood Stem Cell TransplantationSpinal CordBlood BanksSpinal Cord InjuriesUmbilical VeinsInfant, NewbornAntigens, CD34Umbilical ArteriesPregnancyHematopoietic Stem CellsMaternal-Fetal ExchangeCells, CulturedHematopoietic Stem Cell TransplantationCell DifferentiationBlood PreservationCell SeparationMesenchymal Stromal CellsGraft vs Host DiseaseCell Culture TechniquesHistocompatibility TestingColony-Forming Units AssayStem CellsHernia, UmbilicalMice, SCIDTransplantation ConditioningAntigens, CDNuchal CordGestational AgeImmunophenotypingPlacentaFlow CytometryAntigens, CD38Mice, Inbred NODSpinal Cord DiseasesHematologic NeoplasmsUrachal CystADP-ribosyl CyclaseSpinal Cord CompressionFetusDonor SelectionBone Marrow CellsBlood Cell CountUnrelated DonorsCell LineageTransplantation, HomologousGraft SurvivalBlood CellsSpermatic CordFetal Stem CellsHematopoiesisLeukocytes, MononuclearMaternal ExposureWharton JellyNAD+ NucleosidaseTransplantation ChimeraAmniotic FluidTime FactorsCoculture TechniquesSpinal Cord NeoplasmsCryopreservationStem Cell FactorSpinal Cord IschemiaEndothelial CellsHuman Umbilical Vein Endothelial CellsMyeloablative AgonistsBlood DonorsInfant, PostmatureUltrasonography, PrenatalAntigens, CD45HLA AntigensTissue DonorsLeukemiaTransplantation, HeterologousHematologic DiseasesUmbilicusCell ProliferationStem Cell TransplantationBlood Transfusion, AutologousInfant, PrematureCesarean SectionFetal HypoxiaErythroid Precursor CellsLeukodystrophy, MetachromaticDelivery, ObstetricEndothelium, VascularAllograftsFetal DiseasesBlood Specimen CollectionN-Acetylgalactosamine-4-SulfataseBirth WeightCell DivisionCord FactorsT-LymphocytesTransplantsTreatment OutcomeCerebroside-SulfataseBiological MarkersCytokines