Cord Blood Stem Cell TransplantationFetal BloodTransplantation, HomologousGraft vs Host DiseaseTransplantation ConditioningHematologic NeoplasmsHematopoietic Stem Cell TransplantationHistocompatibility TestingTransplantation ChimeraTransplantation, AutologousGraft SurvivalBlood BanksHistocompatibilityTissue DonorsBone Marrow TransplantationAllograftsMyeloablative AgonistsTransplantsHLA AntigensImmunogenetic PhenomenaLiver TransplantationLeukemiaTreatment OutcomeChimerismGraft vs Leukemia EffectHematologic DiseasesUnrelated DonorsWhole-Body IrradiationVolvariellaVidarabineKidney TransplantationCytomegalovirus InfectionsGraft RejectionImmunosuppressive AgentsRecurrenceHematopoietic Stem CellsRetrospective StudiesSpinal CordAntilymphocyte SerumBlood DonorsStem Cell TransplantationAnemia, AplasticLeukodystrophy, Globoid CellInfant, NewbornSurvival AnalysisPrecursor Cell Lymphoblastic Leukemia-LymphomaTime FactorsHeart TransplantationMyelodysplastic SyndromesLeukemia, Myeloid, AcuteDisease-Free SurvivalColony-Forming Units AssayAcute DiseaseSurvival RateHematopoiesisLung TransplantationPeripheral Blood Stem Cell TransplantationImmunophenotypingAntigens, CD34Spinal Cord InjuriesBlood Transfusion, AutologousInfectionCytomegalovirusLeukocyte CountTransplantation ImmunologyEpstein-Barr Virus InfectionsFollow-Up StudiesCell TransplantationOrgan TransplantationTransplantation, IsogeneicIslets of Langerhans TransplantationKiller Cells, NaturalNeutrophilsTransplantationPancreas TransplantationUmbilical CordT-LymphocytesRisk FactorsIncidenceSkin TransplantationImmunosuppressionLymphocyte Culture Test, MixedTransplantation, HeterotopicTransplantation ToleranceLiving DonorsCells, CulturedBusulfanIsoantigensCombined Modality TherapyRemission InductionLymphocyte ActivationGraft vs Tumor EffectTransplantation, HeterologousFetal Tissue TransplantationCell DifferentiationBone Marrow CellsHeart-Lung TransplantationFlow CytometryCytotoxicity, ImmunologicCell Separation