Blood BanksCord Blood Stem Cell TransplantationFetal BloodPlacentaSpinal CordBlood DonorsBlood Grouping and CrossmatchingBlood TransfusionCytapheresisBlood Buffy CoatSpinal Cord InjuriesBlood PreservationDonor SelectionUmbilical CordPregnancyBlood Transfusion, AutologousInfant, NewbornPlacenta DiseasesHistocompatibility TestingMaternal-Fetal ExchangeAntigens, CD34Placenta PreviaBlood Loss, SurgicalPlacenta AccretaPlacenta, RetainedHematopoietic Stem CellsTrophoblastsSpinal Cord DiseasesSpinal Cord CompressionCells, CulturedGestational AgeFetusHematopoietic Stem Cell TransplantationSpermatic CordRetrospective StudiesCell DifferentiationSpinal Cord IschemiaSpinal Cord NeoplasmsColony-Forming Units AssayMaternal ExposureIntensive Care UnitsMice, SCIDCell SeparationChorionic VilliImmunophenotypingMice, Inbred NODCell Culture TechniquesAntigens, CDFlow CytometryPregnancy Trimester, ThirdGraft vs Host DiseaseAntigens, CD38Time FactorsPregnancy ProteinsStem CellsPlacentationAmniotic Fluid