Fetal BloodUmbilical CordCord Blood Stem Cell TransplantationBlood BanksSpinal CordTissue BanksSperm BanksSpinal Cord InjuriesInfant, NewbornAntigens, CD34Umbilical VeinsPregnancyHematopoietic Stem CellsUmbilical ArteriesBlood PreservationCryopreservationMaternal-Fetal ExchangeHematopoietic Stem Cell TransplantationCells, CulturedCell DifferentiationCell SeparationDonor SelectionGraft vs Host DiseaseHistocompatibility TestingCell Culture TechniquesBiological Specimen BanksColony-Forming Units AssayMice, SCIDMesenchymal Stromal CellsAntigens, CDStem CellsTransplantation ConditioningImmunophenotypingFlow CytometryAntigens, CD38Mice, Inbred NODPlacentaGestational AgeFetal Stem CellsDirected Tissue DonationBone BanksNuchal CordHematologic NeoplasmsHernia, UmbilicalADP-ribosyl CyclaseBone Marrow CellsBlood DonorsBlood Cell CountUnrelated DonorsCell LineageFetusTransplantation, HomologousSpinal Cord DiseasesEye BanksBlood CellsMaternal ExposureGraft SurvivalUrachal CystHematopoiesisLeukocytes, MononuclearTissue DonorsTime FactorsSpinal Cord CompressionTransplantation ChimeraNAD+ NucleosidaseStem Cell FactorAmniotic FluidTissue PreservationCoculture TechniquesSemen PreservationSpermatic CordWharton JellyAntigens, CD45HLA AntigensMyeloablative AgonistsSpinal Cord IschemiaTransplantation, HeterologousEndothelial CellsLeukemiaSpinal Cord NeoplasmsInfant, PostmatureHematologic DiseasesCell ProliferationHuman Umbilical Vein Endothelial CellsStem Cell TransplantationErythroid Precursor CellsFertility PreservationInfant, PrematureBlood Transfusion, AutologousUltrasonography, PrenatalSpecimen HandlingAllograftsDelivery, ObstetricCryoprotective AgentsUmbilicusCesarean SectionConsent FormsFetal HypoxiaBirth WeightBlood Specimen Collection