Fetal BloodSpinal CordSpinal Cord InjuriesUmbilical CordBlood BanksInfant, NewbornAntigens, CD34PregnancyHematopoietic Stem CellsIntensive Care UnitsMaternal-Fetal ExchangeSpinal Cord DiseasesSpinal Cord CompressionTime FactorsCells, CulturedHematopoietic Stem Cell TransplantationSpermatic CordColony-Forming Units AssaySpinal Cord IschemiaCell DifferentiationSpinal Cord NeoplasmsMice, SCIDCord Blood Stem Cell TransplantationHospital UnitsBlood PreservationMaternal ExposureCell SeparationHistocompatibility TestingFlow CytometryMice, Inbred NODImmunophenotypingCell Culture TechniquesTreatment OutcomeAntigens, CDGraft vs Host DiseaseAntigens, CD38Bone Marrow CellsHematologic NeoplasmsStem CellsRadiation DosageGestational AgeADP-ribosyl CyclaseCord FactorsHematopoiesisPlacentaTransplantation ConditioningLeukocytes, MononuclearLethal Dose 50Blood CellsNuchal CordBlood Cell CountParaplegiaMotor NeuronsCell LineageGraft SurvivalRats, Sprague-DawleyStem Cell FactorIntensive Care Units, NeonatalTransplantation, HomologousFetusProspective StudiesVocal CordsDrug Administration ScheduleAntigens, CD45Administration, OralTransplantation ChimeraUnrelated DonorsRadiometryDirected Tissue DonationDisease Models, AnimalT-LymphocytesNAD+ NucleosidaseTransplantation, HeterologousTissue DonorsSpinal Cord RegenerationIntensive Care Units, PediatricCryopreservationDonor SelectionInfant, PrematureRetrospective StudiesCell DivisionFetal Stem CellsHLA AntigensCytokinesCoronary Care UnitsErythroid Precursor CellsAmniotic FluidLymphocytesBirth WeightDouble-Blind MethodCell ProliferationMesenchymal Stromal CellsLeukemiaPrenatal Exposure Delayed EffectsLymphocyte ActivationCoculture TechniquesInfant, Newborn, DiseasesThrombopoietinDose-Response Relationship, RadiationEnvironmental Pollutants