Cord Blood Stem Cell TransplantationFetal BloodBone MarrowBone Marrow TransplantationGraft vs Host DiseaseBone Marrow CellsTransplantation ConditioningHematologic NeoplasmsHistocompatibility TestingTransplantation, HomologousHematopoietic Stem Cell TransplantationTransplantation ChimeraGraft SurvivalBlood BanksHistocompatibilityTissue DonorsBone and BonesAllograftsTransplantsMyeloablative AgonistsLeukemiaHLA AntigensImmunogenetic PhenomenaHematopoietic Stem CellsLiver TransplantationChimerismTreatment OutcomeHematologic DiseasesWhole-Body IrradiationUnrelated DonorsGraft vs Leukemia EffectAnemia, AplasticVolvariellaHematopoiesisColony-Forming Units AssayKidney TransplantationTransplantation, AutologousVidarabineCytomegalovirus InfectionsSpinal CordImmunosuppressive AgentsGraft RejectionRecurrenceRetrospective StudiesLeukodystrophy, Globoid CellInfant, NewbornAntilymphocyte SerumBlood DonorsBone Marrow DiseasesBone RemodelingMyelodysplastic SyndromesPrecursor Cell Lymphoblastic Leukemia-LymphomaTime FactorsBone Marrow ExaminationLeukemia, Myeloid, AcuteSurvival AnalysisAntigens, CD34Bone Marrow NeoplasmsDisease-Free SurvivalHeart TransplantationAcute DiseaseImmunophenotypingStem Cell TransplantationLung TransplantationLeukocyte CountSurvival RateBone DensitySpinal Cord InjuriesCell DifferentiationInfectionEpstein-Barr Virus InfectionsBone Marrow PurgingCytomegalovirusBone ResorptionPeripheral Blood Stem Cell TransplantationOrgan TransplantationFollow-Up StudiesNeutrophilsCells, CulturedMice, Inbred C57BLTransplantation ImmunologyCell TransplantationUmbilical CordKiller Cells, NaturalTransplantation, IsogeneicPancreas TransplantationBone NeoplasmsIslets of Langerhans TransplantationFlow CytometryTransplantationRisk FactorsIncidenceBone DevelopmentBone DiseasesRadiation ChimeraCell SeparationStem CellsStromal CellsMesenchymal Stem Cell TransplantationImmunosuppression