Umbilical CordFetal BloodPlacentaCord Blood Stem Cell TransplantationUmbilical VeinsUmbilical ArteriesBlood BanksPregnancySpinal CordInfant, NewbornAntigens, CD34Spinal Cord InjuriesHematopoietic Stem CellsHernia, UmbilicalMaternal-Fetal ExchangeCells, CulturedUrachal CystGestational AgeMesenchymal Stromal CellsPlacenta DiseasesHematopoietic Stem Cell TransplantationFetusCell DifferentiationWharton JellyUltrasonography, PrenatalCell SeparationHuman Umbilical Vein Endothelial CellsBlood PreservationCell Culture TechniquesUmbilicusStem CellsGraft vs Host DiseaseHistocompatibility TestingAntigens, CDTransplantation ConditioningColony-Forming Units AssayNuchal CordFlow CytometryMice, SCIDPlacenta PreviaImmunophenotypingPlacenta AccretaAntigens, CD38Amniotic FluidEndothelial CellsEndothelium, VascularHematologic NeoplasmsMice, Inbred NODPlacenta, RetainedFetal HypoxiaDonor SelectionADP-ribosyl CyclaseUnrelated DonorsBlood Cell CountBone Marrow CellsCell LineageCesarean SectionTransplantation, HomologousFetal Stem CellsCoculture TechniquesFetal DiseasesTime FactorsGraft SurvivalBlood CellsFetal Growth RetardationMaternal ExposureHematopoiesisPre-EclampsiaNAD+ NucleosidaseLeukocytes, MononuclearTransplantation ChimeraPlacental CirculationPregnancy OutcomeCryopreservationInfant, PostmatureDelivery, ObstetricPregnancy Trimester, FirstMyeloablative AgonistsCell ProliferationBlood DonorsPregnancy Trimester, ThirdTrophoblastsUrachusTransplantation, HeterologousHematologic DiseasesHLA AntigensStem Cell FactorStem Cell TransplantationSpinal Cord DiseasesLeukemiaBirth WeightInfant, PrematureBlood Transfusion, AutologousTissue DonorsAntigens, CD45Leukodystrophy, MetachromaticApgar ScoreUltrasonography, DopplerMeconiumSpinal Cord Compression