ChorionUmbilical CordFetal BloodUmbilical VeinsUmbilical ArteriesCord Blood Stem Cell TransplantationSpinal CordPregnancyEgg ProteinsSpinal Cord InjuriesExtraembryonic MembranesAmnionHernia, UmbilicalUrachal CystInfant, NewbornPlacentaBombyxBlood BanksGestational AgeWharton JellyAllantoisHuman Umbilical Vein Endothelial CellsCells, CulturedUltrasonography, PrenatalUmbilicusMesenchymal Stromal CellsLabor, ObstetricAntigens, CD34Maternal-Fetal ExchangeFetusHematopoietic Stem CellsEndothelium, VascularFetal HypoxiaFetal DiseasesCell DifferentiationVitelline MembraneChorioamnionitisEndothelial CellsEgg ShellOryziasOogenesisUrachusPregnancy Trimester, FirstSpinal Cord DiseasesOvumTrophoblastsPlacenta DiseasesSpinal Cord CompressionNuchal CordStem CellsCell Culture TechniquesUltrasonography, DopplerCell SeparationHeart Rate, FetalTime FactorsFetal Growth RetardationPlacental CirculationAmniotic FluidDeciduaHematopoietic Stem Cell TransplantationAsphyxiaGene AmplificationApgar ScoreRNA, MessengerSpermatic CordMeconiumCesarean SectionConstrictionPregnancy OutcomeFlow CytometryAntigens, CDFetal DistressFetal Membranes, Premature RuptureSpinal Cord NeoplasmsDelivery, ObstetricCoculture TechniquesBlood PreservationBase SequenceProlapseOligohydramniosAedesInsect ProteinsGraft vs Host DiseaseColony-Forming Units Assay