Umbilical CordFetal BloodUmbilical VeinsUmbilical ArteriesCord Blood Stem Cell TransplantationSpinal CordSpinal Cord InjuriesHernia, UmbilicalPregnancyUrachal CystInfant, NewbornBlood BanksWharton JellyHuman Umbilical Vein Endothelial CellsUltrasonography, PrenatalUmbilicusCells, CulturedGestational AgeMesenchymal Stromal CellsAntigens, CD34Maternal-Fetal ExchangeFetusHematopoietic Stem CellsPlacentaEndothelium, VascularFetal HypoxiaEndothelial CellsCell DifferentiationUrachusSpinal Cord DiseasesFetal DiseasesSpinal Cord CompressionNuchal CordStem CellsCell Culture TechniquesUltrasonography, DopplerCell SeparationHeart Rate, FetalFetal Growth RetardationPlacental CirculationAmniotic FluidHematopoietic Stem Cell TransplantationAsphyxiaApgar ScoreSpermatic CordMeconiumPregnancy Trimester, FirstCesarean SectionConstrictionPregnancy OutcomeFlow CytometryAntigens, CDFetal DistressTime FactorsSpinal Cord NeoplasmsDelivery, ObstetricCoculture TechniquesBlood PreservationProlapseOligohydramniosGraft vs Host DiseaseColony-Forming Units AssayMice, SCIDMesenchymal Stem Cell TransplantationCell ProliferationImmunophenotypingTransplantation ConditioningHistocompatibility TestingSpinal Cord IschemiaChorioamnionitisBlood Flow VelocityCell LineageSingle Umbilical ArteryBirth WeightInfant, Newborn, DiseasesPre-EclampsiaGenetic PhenomenaPregnancy Trimester, SecondPlacenta DiseasesNeovascularization, PhysiologicIntestinal AtresiaPregnancy Trimester, ThirdUltrasonography, Doppler, ColorAmnionFetoscopyAntigens, CD38Bone Marrow CellsMaternal ExposureAnti-Infective Agents, LocalFetal Stem CellsCell AdhesionMice, Inbred NODFetal MonitoringHematologic NeoplasmsInfant, PrematureDonor SelectionRNA, MessengerPregnancy ComplicationsChlorhexidinePregnancy Reduction, Multifetal