Hematopoietic Stem Cell TransplantationStem CellsStem Cell TransplantationTransplantation, HomologousTransplantation, AutologousHematopoietic Stem CellsTransplantationHematologic NeoplasmsGraft vs Host DiseaseEmbryonic Stem CellsAdult Stem CellsRadiation DosageTransplantation ConditioningRadiation, IonizingImmunocompromised HostCytomegalovirus InfectionsPeripheral Blood Stem Cell TransplantationTissue DonorsPluripotent Stem CellsTreatment OutcomeRadiation InjuriesBone Marrow TransplantationGraft SurvivalOpportunistic InfectionsStem Cell NicheKidney TransplantationMycosesNeural Stem CellsHistocompatibility TestingRetrospective StudiesAspergillosisDose-Response Relationship, RadiationImmunosuppressive AgentsMesenchymal Stem Cell TransplantationInduced Pluripotent Stem CellsRoseolovirus InfectionsCell DifferentiationTime FactorsHematopoietic Stem Cell MobilizationRadiation ToleranceTransplantsRadiationHistocompatibilityMultipotent Stem CellsCytomegalovirusCombined Modality TherapyWhole-Body IrradiationRadiation ProtectionMesenchymal Stromal CellsRecurrenceStem Cell FactorRadiation MonitoringGraft RejectionMultiple MyelomaHematologic DiseasesAntifungal AgentsAntiviral AgentsBusulfanLeukemiaTransplantation ChimeraAntigens, CD34Fatal OutcomeSurvival RateCells, CulturedHepatic Veno-Occlusive DiseaseCell LineageCord Blood Stem Cell TransplantationHerpesvirus 6, HumanSurvival AnalysisGanciclovirSalvage TherapyBK VirusZygomycosisStem Cell ResearchRisk FactorsFollow-Up StudiesNeoplasmsFlow CytometryPolyomavirus InfectionsPlant StemsAnemia, AplasticAntineoplastic Combined Chemotherapy ProtocolsCyclosporineFetal Stem CellsImmunosuppressionCell ProliferationAcute DiseaseBone Marrow CellsLeukemia, Myelogenous, Chronic, BCR-ABL PositiveProspective StudiesLymphoproliferative DisordersRadiation OncologyHeart TransplantationPrecursor Cell Lymphoblastic Leukemia-LymphomaTriazolesMyeloablative AgonistsAntineoplastic AgentsVirus ActivationPostoperative ComplicationsIncidence