Single Umbilical ArteryUmbilical CordUmbilical ArteriesFetal BloodDigestive System AbnormalitiesUltrasonography, PrenatalSpinal CordPregnancyCardiovascular AbnormalitiesUmbilical VeinsFetal DiseasesGestational AgeSpinal Cord InjuriesCord Blood Stem Cell TransplantationFetal Growth RetardationInfant, NewbornAbnormalities, MultipleCongenital AbnormalitiesBlood BanksUltrasonography, Doppler, ColorUltrasonography, DopplerKaryotypingBlood Flow VelocityHernia, UmbilicalAntigens, CD34Urachal CystHematopoietic Stem CellsMaternal-Fetal ExchangeCells, CulturedWharton JellyMesenchymal Stromal CellsHuman Umbilical Vein Endothelial CellsSpinal Cord DiseasesUmbilicusPlacentaSpinal Cord CompressionFetusCell DifferentiationHematopoietic Stem Cell TransplantationSpermatic CordCell SeparationCell Culture TechniquesFetal HypoxiaSpinal Cord NeoplasmsStem CellsNuchal CordFlow CytometryEndothelium, VascularSpinal Cord IschemiaAntigens, CDBlood PreservationMice, SCIDEndothelial CellsColony-Forming Units AssayHistocompatibility TestingImmunophenotypingGraft vs Host DiseaseAmniotic FluidTime FactorsMaternal ExposureMice, Inbred NODAntigens, CD38Transplantation ConditioningCell LineageCoculture TechniquesBone Marrow CellsUrachusHematologic NeoplasmsADP-ribosyl CyclaseMeconiumApgar ScoreCesarean SectionCord FactorsDelivery, ObstetricPregnancy OutcomeLeukocytes, MononuclearCell ProliferationConstrictionBirth WeightTransplantation, HomologousHematopoiesisBlood Cell CountUnrelated DonorsBlood Cells