Fetal BloodSpinal CordSpinal Cord InjuriesUmbilical CordBlood BanksInfant, NewbornAntigens, CD34Hematopoietic Stem CellsPregnancyMaternal-Fetal ExchangeSpinal Cord DiseasesSpinal Cord CompressionCells, CulturedHematopoietic Stem Cell TransplantationSpermatic CordSpinal Cord IschemiaSpinal Cord NeoplasmsCell DifferentiationCord Blood Stem Cell TransplantationMice, SCIDColony-Forming Units AssayBlood PreservationCell SeparationHistocompatibility TestingMice, Inbred NODImmunophenotypingMaternal ExposureCell Culture TechniquesFlow CytometryAntigens, CDAntigens, CD38Graft vs Host DiseaseADP-ribosyl CyclaseCord FactorsStem CellsPlacentaBone Marrow CellsTime FactorsNuchal CordHematologic NeoplasmsTransplantation ConditioningParaplegiaGestational AgeBlood CellsCell LineageLeukocytes, MononuclearHematopoiesisStem Cell FactorCalciumGraft SurvivalVocal CordsBlood Cell CountTransplantation, HomologousFetusAntigens, CD45Unrelated DonorsTransplantation ChimeraNAD+ NucleosidaseDirected Tissue DonationSpinal Cord RegenerationDonor SelectionCryopreservationFetal Stem CellsTissue DonorsT-LymphocytesHLA AntigensAmniotic FluidThapsigarginErythroid Precursor CellsMesenchymal Stromal CellsCoculture TechniquesTransplantation, HeterologousMotor NeuronsBirth WeightThrombopoietinHistocompatibilityBlood DonorsRats, Sprague-DawleyPregnancy Complications, ParasiticLymphocyte ActivationCervical VertebraeCytokinesMaternal-Fetal RelationsInfant, PrematurePrenatal Exposure Delayed EffectsAntigens, CD7AllograftsCell ProliferationLeukemiaEnvironmental PollutantsLymphocytesCulture Media, Serum-FreeBlood Specimen CollectionQuadriplegiaInfant, Newborn, DiseasesRecovery of FunctionCell DivisionStem Cell TransplantationMegakaryocytesPregnancy Complications, Infectious