Umbilical CordFetal BloodUmbilical ArteriesCord Blood Stem Cell TransplantationUmbilical VeinsPregnancySpinal CordFetusMaternal-Fetal ExchangeBlood BanksInfant, NewbornSpinal Cord InjuriesPlacentaGestational AgeAntigens, CD34Placental CirculationHematopoietic Stem CellsHernia, UmbilicalUltrasonography, Doppler, PulsedUltrasonography, PrenatalFetal Growth RetardationRegional Blood FlowFetal DiseasesBlood Flow VelocityCells, CulturedSheepGasesHematopoietic Stem Cell TransplantationUterusHuman Umbilical Vein Endothelial CellsMesenchymal Stromal CellsCell DifferentiationUmbilicusUrachal CystCell SeparationBlood PreservationCell Culture TechniquesGraft vs Host DiseaseHistocompatibility TestingStem CellsTransplantation ConditioningAntigens, CDNuchal CordColony-Forming Units AssayMice, SCIDFlow CytometryEndothelial CellsImmunophenotypingAntigens, CD38Endothelium, VascularWharton JellyHematologic NeoplasmsMice, Inbred NODDonor SelectionADP-ribosyl CyclaseUnrelated DonorsBlood Cell CountBone Marrow CellsTransplantation, HomologousCell LineageGraft SurvivalAmniotic FluidFetal Stem CellsCoculture TechniquesBlood CellsTime FactorsNAD+ NucleosidaseSpinal Cord DiseasesTransplantation ChimeraHematopoiesisLeukocytes, MononuclearCryopreservationInfant, PostmatureMyeloablative AgonistsFetal HypoxiaSpinal Cord CompressionMaternal ExposureCell ProliferationBlood DonorsCesarean SectionStem Cell FactorHematologic DiseasesTransplantation, HeterologousLeukemiaHLA AntigensBlood Transfusion, AutologousTissue DonorsStem Cell TransplantationSpermatic CordAntigens, CD45Pregnancy OutcomeLeukodystrophy, MetachromaticDelivery, ObstetricInfant, PrematureN-Acetylgalactosamine-4-SulfataseUltrasonography, DopplerSpinal Cord NeoplasmsCerebroside-SulfataseCell DivisionBirth Weight