Cord Blood Stem Cell TransplantationTransplantation, HomologousHematopoietic Stem Cell TransplantationStem Cell TransplantationGraft vs Host DiseaseTransplantation ConditioningHematologic NeoplasmsCytomegalovirus InfectionsRoseolovirus InfectionsTransplantation, AutologousHistocompatibility TestingAspergillosisStem CellsBone Marrow TransplantationTreatment OutcomeCytomegalovirusFetal BloodTissue DonorsRetrospective StudiesTransplantation ChimeraGraft SurvivalPeripheral Blood Stem Cell TransplantationHematopoietic Stem CellsImmunosuppressive AgentsGraft vs Leukemia EffectRecurrenceBusulfanLeukemiaTransplantationGraft vs Tumor EffectMyeloablative AgonistsHistocompatibilityRemission InductionVidarabineImmunocompromised HostWhole-Body IrradiationGraft RejectionT-LymphocytesKidney TransplantationTime FactorsLeukemia, Myeloid, AcuteLeukemia, Myelogenous, Chronic, BCR-ABL PositiveLymphocyte DepletionMultiple MyelomaCombined Modality TherapySurvival AnalysisPrecursor Cell Lymphoblastic Leukemia-LymphomaOpportunistic InfectionsSalvage TherapyAntigens, CD34Survival RateHematopoietic Stem Cell MobilizationTransplantsImmunosuppressionMycosesSiblingsEmbryonic Stem CellsVirus ActivationSpinal CordAnemia, AplasticAcute DiseaseMyelodysplastic SyndromesAdult Stem CellsChimerismHematologic DiseasesHepatic Veno-Occlusive DiseaseHLA AntigensTransplantation ImmunologyAntilymphocyte SerumMinor Histocompatibility AntigensCyclosporineCell DifferentiationGanciclovirFollow-Up StudiesBlood Transfusion, AutologousLeukocyte TransfusionCells, CulturedLymphocyte Culture Test, MixedFlow CytometryIsoantigensCyclophosphamideHerpesvirus 6, HumanAntineoplastic Combined Chemotherapy ProtocolsLymphocyte TransfusionFatal OutcomeLymphoproliferative DisordersNeoplasm, ResidualDisease-Free SurvivalMelphalanBone Marrow CellsPluripotent Stem CellsAntiviral AgentsRisk FactorsTransplantation, IsogeneicMice, Inbred C57BLPrognosisHeart TransplantationLeukemia, MyeloidSpinal Cord InjuriesProspective Studies