Umbilical CordFetal BloodUmbilical VeinsUmbilical ArteriesCord Blood Stem Cell TransplantationSpinal CordLeukocytes, MononuclearSpinal Cord InjuriesPregnancyHernia, UmbilicalCells, CulturedUrachal CystInfant, NewbornAntigens, CD34Flow CytometryBlood BanksLymphocytesHematopoietic Stem CellsPeripheral NervesWharton JellyT-LymphocytesBlood CellsHuman Umbilical Vein Endothelial CellsMonocytesUltrasonography, PrenatalUmbilicusAntigens, CDHematopoietic Stem Cell TransplantationCell SeparationLymphocyte ActivationMesenchymal Stromal CellsGestational AgeImmunophenotypingCell DifferentiationTime FactorsFetusPeripheral Blood Stem Cell TransplantationEndothelium, VascularMaternal-Fetal ExchangePlacentaRNA, MessengerLeukocytesLeukocyte CountEndothelial CellsPeripheral Nervous SystemCytokinesBlood Cell CountFetal HypoxiaPeripheral Nervous System DiseasesStem CellsB-LymphocytesBone Marrow CellsCell Culture TechniquesHematopoietic Stem Cell MobilizationPolymerase Chain ReactionColony-Forming Units AssayInterferon-gammaCD4-Positive T-LymphocytesPhytohemagglutininsCoculture TechniquesReverse Transcriptase Polymerase Chain ReactionPeripheral Vascular DiseasesTransplantation, HomologousBone MarrowKiller Cells, NaturalGraft vs Host DiseaseAntibodies, MonoclonalMice, SCIDCell ProliferationSpinal Cord DiseasesBiological MarkersUrachusInterleukin-2Transplantation, AutologousT-Lymphocyte SubsetsFetal DiseasesGranulocyte Colony-Stimulating FactorLymphocyte CountTransplantation ConditioningHematopoiesisBlood PreservationMolecular Sequence DataCell DivisionAntigens, CD45Tumor Necrosis Factor-alphaUltrasonography, DopplerGene Expression RegulationSpinal Cord CompressionNeutrophilsNuchal CordCell LineEnzyme-Linked Immunosorbent AssayCell AdhesionImmunohistochemistryAntigens, CD3Hematologic NeoplasmsHistocompatibility TestingCase-Control StudiesHeart Rate, FetalLeukapheresis