Umbilical CordFetal BloodOocyte DonationUmbilical VeinsUmbilical ArteriesCord Blood Stem Cell TransplantationSpinal CordTissue and Organ ProcurementDirected Tissue DonationLeukocytes, MononuclearTissue DonorsSpinal Cord InjuriesPregnancyBlood DonorsHernia, UmbilicalCells, CulturedInfant, NewbornUrachal CystBrain DeathAntigens, CD34AltruismDonor SelectionFlow CytometryBlood BanksHematopoietic Stem CellsLymphocytesPeripheral NervesLiving DonorsWharton JellyT-LymphocytesBlood CellsHuman Umbilical Vein Endothelial CellsMonocytesDeathUltrasonography, PrenatalTime FactorsHematopoietic Stem Cell TransplantationUmbilicusAntigens, CDGift GivingCell SeparationLymphocyte ActivationMesenchymal Stromal CellsGestational AgePresumed ConsentImmunophenotypingCell DifferentiationFetusPeripheral Blood Stem Cell TransplantationEndothelium, VascularMaternal-Fetal ExchangePlacentaRNA, MessengerLeukocytesLeukocyte CountBlood Cell CountEndothelial CellsPeripheral Nervous SystemCytokinesTissue and Organ HarvestingBlood Transfusion, AutologousFetal HypoxiaPeripheral Nervous System DiseasesOrgan TransplantationStem CellsHematopoietic Stem Cell MobilizationPolymerase Chain ReactionThird-Party ConsentB-LymphocytesBone Marrow CellsCell Culture TechniquesTransplantation, HomologousColony-Forming Units AssayInterferon-gammaGraft SurvivalCD4-Positive T-LymphocytesKidney TransplantationPhytohemagglutininsCoculture TechniquesBlood PreservationEmbryo DispositionHistocompatibility TestingReverse Transcriptase Polymerase Chain ReactionPregnancy OutcomePeripheral Vascular DiseasesBone MarrowBiological MarkersBlood TransfusionKiller Cells, NaturalGraft vs Host DiseaseAntibodies, MonoclonalTreatment OutcomeMice, SCIDCell ProliferationGranulocyte Colony-Stimulating FactorCryopreservationSpinal Cord DiseasesUrachusInterleukin-2Transplantation, Autologous