Fetal BloodUmbilical CordCord Blood Stem Cell TransplantationSpinal CordBlood BanksSpinal Cord InjuriesInfant, NewbornAntigens, CD34Umbilical VeinsHematopoietic Stem CellsPregnancyUmbilical ArteriesMaternal-Fetal ExchangeHematopoietic Stem Cell TransplantationCells, CulturedCell DifferentiationBlood PreservationCell SeparationGraft vs Host DiseaseHistocompatibility TestingCell Culture TechniquesColony-Forming Units AssayMice, SCIDMesenchymal Stromal CellsAntigens, CDStem CellsTransplantation ConditioningImmunophenotypingFlow CytometryAntigens, CD38Mice, Inbred NODPlacentaGestational AgeNuchal CordHematologic NeoplasmsHernia, UmbilicalADP-ribosyl CyclaseBone Marrow CellsBlood Cell CountUnrelated DonorsDonor SelectionCell LineageFetusTransplantation, HomologousSpinal Cord DiseasesBlood CellsMaternal ExposureGraft SurvivalUrachal CystHematopoiesisLeukocytes, MononuclearSpinal Cord CompressionFetal Stem CellsTransplantation ChimeraNAD+ NucleosidaseStem Cell FactorAmniotic FluidCryopreservationCoculture TechniquesTime FactorsSpermatic CordWharton JellyAntigens, CD45Blood DonorsHLA AntigensTissue DonorsMyeloablative AgonistsSpinal Cord IschemiaTransplantation, HeterologousEndothelial CellsLeukemiaSpinal Cord NeoplasmsInfant, PostmatureHematologic DiseasesCell ProliferationHuman Umbilical Vein Endothelial CellsStem Cell TransplantationErythroid Precursor CellsInfant, PrematureBlood Transfusion, AutologousUltrasonography, PrenatalAllograftsDelivery, ObstetricUmbilicusCesarean SectionFetal HypoxiaBirth WeightBlood Specimen CollectionT-LymphocytesLeukodystrophy, MetachromaticCell DivisionTransplantsCytokinesAntigens, CD7ThrombopoietinBiological MarkersAntigens, DifferentiationN-Acetylgalactosamine-4-SulfataseTreatment OutcomeHistocompatibility