Umbilical CordPlacentaUterusFetal BloodSpinal CordUmbilical VeinsUmbilical ArteriesPregnancySpinal Cord InjuriesCord Blood Stem Cell TransplantationInfant, NewbornBlood BanksPlacenta DiseasesMaternal-Fetal ExchangePlacenta PreviaHernia, UmbilicalPlacenta AccretaAntigens, CD34Gestational AgePlacenta, RetainedFetusUrachal CystHematopoietic Stem CellsCells, CulturedTrophoblastsUltrasonography, PrenatalWharton JellyMesenchymal Stromal CellsHuman Umbilical Vein Endothelial CellsSpinal Cord DiseasesCell DifferentiationUmbilicusSpinal Cord CompressionPregnancy, AnimalHematopoietic Stem Cell TransplantationAmniotic FluidCell SeparationSpermatic CordPregnancy Trimester, ThirdFetal HypoxiaFetal Growth RetardationCesarean SectionCell Culture TechniquesPregnancy Trimester, FirstPre-EclampsiaStem CellsPlacental CirculationTime FactorsSpinal Cord NeoplasmsAntigens, CDEndothelium, VascularFlow CytometryChorionic VilliNuchal CordPregnancy ProteinsEndothelial CellsPlacentationSpinal Cord IschemiaMaternal ExposureMice, SCIDBlood PreservationColony-Forming Units AssayImmunohistochemistryLabor, ObstetricDeciduaFetal DiseasesImmunophenotypingPregnancy OutcomeHistocompatibility TestingGraft vs Host DiseaseEmbryo ImplantationChorionPregnancy ComplicationsDelivery, ObstetricExtraembryonic MembranesMice, Inbred NODMyometriumChorioamnionitisPregnancy Trimester, SecondUterine ContractionAntigens, CD38Transplantation ConditioningFetal DevelopmentBirth WeightCell LineageCoculture TechniquesSheepBone Marrow CellsMeconiumRNA, MessengerApgar ScoreCell ProliferationUrachusReverse Transcriptase Polymerase Chain ReactionHematologic NeoplasmsEndometriumAmnionADP-ribosyl CyclaseFetal Stem CellsUltrasonography, Doppler