Umbilical CordFetal BloodCord Blood Stem Cell TransplantationUmbilical VeinsUmbilical ArteriesBlood BanksSpinal CordInfant, NewbornPregnancyAntigens, CD34Spinal Cord InjuriesHematopoietic Stem CellsHernia, UmbilicalCells, CulturedUrachal CystMaternal-Fetal ExchangeMesenchymal Stromal CellsHematopoietic Stem Cell TransplantationGestational AgeCell DifferentiationWharton JellyCell SeparationPlacentaHuman Umbilical Vein Endothelial CellsBlood PreservationCell Culture TechniquesUltrasonography, PrenatalUmbilicusGraft vs Host DiseaseStem CellsFetusHistocompatibility TestingAntigens, CDTransplantation ConditioningColony-Forming Units AssayNuchal CordFlow CytometryMice, SCIDImmunophenotypingAntigens, CD38Endothelial CellsHematologic NeoplasmsMice, Inbred NODEndothelium, VascularDonor SelectionFetal HypoxiaBlood Cell CountADP-ribosyl CyclaseUnrelated DonorsAmniotic FluidCell LineageBone Marrow CellsTransplantation, HomologousCoculture TechniquesTime FactorsFetal Stem CellsGraft SurvivalBlood CellsFetal DiseasesNAD+ NucleosidaseHematopoiesisLeukocytes, MononuclearCryopreservationTransplantation ChimeraInfant, PostmatureCesarean SectionMyeloablative AgonistsMaternal ExposureBlood DonorsCell ProliferationDelivery, ObstetricUrachusPregnancy OutcomeHematologic DiseasesTransplantation, HeterologousStem Cell FactorSpinal Cord DiseasesStem Cell TransplantationLeukemiaHLA AntigensBlood Transfusion, AutologousTissue DonorsInfant, PrematureLeukodystrophy, MetachromaticAntigens, CD45Fetal Growth RetardationSpinal Cord CompressionBirth WeightApgar ScoreGranulocyte-Macrophage Progenitor CellsUltrasonography, DopplerN-Acetylgalactosamine-4-SulfataseMeconiumMesenchymal Stem Cell TransplantationHeart Rate, FetalBlood Specimen CollectionPlacental CirculationCerebroside-SulfatasePenile ImplantationCell Division