Umbilical CordFetal BloodOccult 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 DiseasesSpinal Cord CompressionFetal DiseasesColonoscopyUltrasonography, DopplerNuchal CordStem CellsCell Culture TechniquesCell SeparationTime FactorsHeart Rate, FetalFetal Growth RetardationPlacental CirculationAmniotic FluidHematopoietic Stem Cell TransplantationAsphyxiaApgar ScoreSigmoidoscopyFlow CytometrySpermatic CordMeconiumPregnancy Trimester, FirstCesarean SectionConstrictionPregnancy OutcomeAntigens, CDNeoplasms, Unknown PrimaryFetal DistressSensitivity and SpecificityMass ScreeningSpinal Cord NeoplasmsColorectal NeoplasmsDelivery, ObstetricCoculture TechniquesBlood PreservationProlapseOligohydramniosGraft vs Host DiseaseColony-Forming Units AssayProspective StudiesMice, SCIDMesenchymal Stem Cell TransplantationCell ProliferationImmunophenotypingTransplantation ConditioningHistocompatibility TestingSpinal Cord IschemiaChorioamnionitisBlood Flow VelocityImmunohistochemistryCell LineageSingle Umbilical ArteryBirth WeightRetrospective StudiesInfant, Newborn, DiseasesPre-EclampsiaGenetic PhenomenaPregnancy Trimester, SecondPlacenta DiseasesNeovascularization, PhysiologicIntestinal AtresiaBlood DonorsPregnancy Trimester, ThirdUltrasonography, Doppler, ColorRNA, MessengerAmnionFetoscopyAntigens, CD38Bone Marrow CellsMaternal Exposure