Umbilical CordFetal BloodBlood DonorsUmbilical VeinsUmbilical ArteriesCord Blood Stem Cell TransplantationSpinal CordLeukocytes, MononuclearBlood CellsSpinal Cord InjuriesCells, CulturedPregnancyHernia, UmbilicalEnzyme-Linked Immunosorbent AssayFlow CytometryErythrocytesInfant, NewbornUrachal CystAntigens, CD34Polymerase Chain ReactionHematopoietic Stem CellsLymphocytesMonocytesImmunoglobulin GBlood Cell CountBlood BanksTorque teno virusLymphocyte ActivationT-LymphocytesTime FactorsSensitivity and SpecificityPeripheral NervesDNA Virus InfectionsSeroepidemiologic StudiesLeukocyte CountWharton JellyImmunoglobulin MCase-Control StudiesHuman Umbilical Vein Endothelial CellsLeukocytesCell SeparationAntigens, CDHematopoietic Stem Cell TransplantationReference ValuesUltrasonography, PrenatalAutoantibodiesUmbilicusCell DifferentiationBiological MarkersImmunophenotypingGestational AgeCytokinesMesenchymal Stromal CellsCoal TarDonor SelectionBlood Buffy CoatFetusMolecular Sequence DataEndothelium, VascularCD4-Positive T-LymphocytesMaternal-Fetal ExchangePeripheral Blood Stem Cell TransplantationAntibodies, BacterialPlacentaRNA, MessengerAntibodies, MonoclonalImmunoglobulin AEndothelial CellsBlood PreservationBone Marrow CellsBase SequenceRecombinant ProteinsB-LymphocytesGenotypePeripheral Nervous SystemFetal HypoxiaColony-Forming Units AssayStem CellsPeripheral Nervous System DiseasesHematopoietic Stem Cell MobilizationCell Culture TechniquesPolymorphism, GeneticHematopoiesisBone MarrowInterferon-gammaAntibodies, ViralDNA, ViralReverse Transcriptase Polymerase Chain ReactionPhytohemagglutininsCoculture TechniquesProspective StudiesTransplantation, HomologousAntibodiesToxoplasmosisKiller Cells, NaturalAntibody SpecificityMice, SCIDGranulocyte Colony-Stimulating FactorPeripheral Vascular DiseasesNeutrophils