Umbilical CordFetal BloodCord Blood Stem Cell TransplantationSpinal CordUmbilical VeinsSpinal Cord InjuriesUmbilical ArteriesWharton JellyMesenchymal Stromal CellsHuman Umbilical Vein Endothelial CellsCells, CulturedAntigens, CD34Hematopoietic Stem CellsInfant, NewbornPregnancyCell DifferentiationEndothelium, VascularEndothelial CellsBlood BanksStem CellsCell SeparationCell Culture TechniquesGranulocyte-Macrophage Progenitor CellsMesenchymal Stem Cell TransplantationAntigens, CDCoculture TechniquesMice, SCIDFlow CytometryHernia, UmbilicalSpinal Cord DiseasesCell ProliferationUrachal CystCell LineageColony-Forming Units AssayMice, Inbred NODSpinal Cord CompressionHematopoietic Stem Cell TransplantationImmunophenotypingNeovascularization, PhysiologicLiver ExtractsMaternal-Fetal ExchangeTime FactorsTransplantation, HeterologousCalcium PhosphatesCulture Media, ConditionedSpermatic CordOpiate AlkaloidsTissue EngineeringStromal CellsCell AdhesionLeukocytes, MononuclearImmunohistochemistryCells, ImmobilizedGestational AgeSpinal Cord NeoplasmsStem Cell TransplantationAntigens, CD38Cell SurvivalAntigens, CD45Bone Marrow CellsRNA, MessengerCell MovementImmunogenetic PhenomenaReverse Transcriptase Polymerase Chain ReactionADP-ribosyl CyclasePlacentaSpinal Cord IschemiaUltrasonography, PrenatalHematopoiesisOsteogenesisFetusDisease Models, AnimalBlood CellsUmbilicusStem Cell FactorTissue ScaffoldsVascular Endothelial Growth Factor ARats, Sprague-DawleyCell DivisionCytokinesAntigens, CD146Gene Expression RegulationNuchal CordCell TransplantationCulture Media, Serum-FreeFetal HypoxiaBiological MarkersChondrogenesisCord FactorsHexuronic AcidsSignal TransductionGlucuronic AcidCell LineCell CountBlood PreservationNeuronsMultipotent Stem CellsTumor Necrosis Factor-alphaGlycoproteinsParaplegia