Twins, MonozygoticDiseases in TwinsTwinsBiometric IdentificationHematopoietic Stem Cell TransplantationStem CellsTwins, DizygoticDermatoglyphicsStem Cell TransplantationTwin Studies as TopicEunuchismTransplantation, HomologousTwins, ConjoinedTransplantation, AutologousHematopoietic Stem CellsTransplantationBone Marrow TransplantationTransplantation, IsogeneicHematologic NeoplasmsCombat DisordersGraft vs Host DiseaseEmbryonic Stem CellsPregnancyAdult Stem CellsTransplantation ConditioningImmunocompromised HostCytomegalovirus InfectionsPeripheral Blood Stem Cell TransplantationTissue DonorsPluripotent Stem CellsDiabetes Mellitus, Type 1Treatment OutcomeGraft SurvivalOpportunistic InfectionsStem Cell NicheKidney TransplantationMycosesHistocompatibility TestingNeural Stem CellsAspergillosisImmunosuppressive AgentsInduced Pluripotent Stem CellsMesenchymal Stem Cell TransplantationRetrospective StudiesRoseolovirus InfectionsCell DifferentiationHematopoietic Stem Cell MobilizationTransplantsHistocompatibilityMultipotent Stem CellsCytomegalovirusTime FactorsPregnancy, TwinMesenchymal Stromal CellsStem Cell FactorRecurrencePedigreeGraft RejectionWhole-Body IrradiationMultiple MyelomaAntifungal AgentsHematologic DiseasesAntiviral AgentsBusulfanTransplantation ChimeraLeukemiaAntigens, CD34Fatal OutcomeHepatic Veno-Occlusive DiseaseCell LineageCord Blood Stem Cell TransplantationHerpesvirus 6, HumanGanciclovirCombined Modality TherapyCells, CulturedBK VirusRisk FactorsZygomycosisStem Cell ResearchSurvival RateSalvage TherapySurvival AnalysisPolyomavirus InfectionsAnemia, AplasticPlant StemsCyclosporineFetal Stem CellsFlow CytometryFollow-Up StudiesImmunosuppressionAcute DiseaseLeukemia, Myelogenous, Chronic, BCR-ABL PositiveBone Marrow CellsLymphoproliferative DisordersHeart TransplantationProspective StudiesCell ProliferationTriazolesPrecursor Cell Lymphoblastic Leukemia-LymphomaMyeloablative Agonists