Hematopoietic Stem Cell TransplantationTransplantation, HomologousHematopoietic Stem CellsStem Cell TransplantationGraft vs Host DiseaseUnrelated DonorsTransplantation ConditioningTransplantation, AutologousBone Marrow TransplantationTissue DonorsHematologic NeoplasmsPeripheral Blood Stem Cell TransplantationHistocompatibility TestingStem CellsHistocompatibilityBone MarrowCord Blood Stem Cell TransplantationTransplantation ChimeraBone Marrow CellsTreatment OutcomeGraft SurvivalWhole-Body IrradiationMyeloablative AgonistsLeukemiaBusulfanHematopoiesisRecurrenceHematopoietic Stem Cell MobilizationRetrospective StudiesHLA AntigensAntigens, CD34Graft vs Leukemia EffectChimerismHematologic DiseasesImmunosuppressive AgentsLiver TransplantationVidarabineSiblingsRemission InductionMyelodysplastic SyndromesDisease-Free SurvivalLeukemia, Myeloid, AcuteAnemia, AplasticSurvival AnalysisCell DifferentiationSurvival RateLiving DonorsCombined Modality TherapyTime FactorsHepatic Veno-Occlusive DiseasePrecursor Cell Lymphoblastic Leukemia-LymphomaMultiple MyelomaAntilymphocyte SerumTransplantation ImmunologyMesenchymal Stem Cell TransplantationDonor SelectionFetal BloodCell LineageGraft vs Tumor EffectLeukemia, Myelogenous, Chronic, BCR-ABL PositiveBlood DonorsSevere Combined ImmunodeficiencyMelphalanCell TransplantationKidney TransplantationFlow CytometryLymphocyte TransfusionMice, Inbred C57BLStem Cell NicheCyclophosphamideLymphocyte DepletionTransplantation, IsogeneicAcute DiseaseColony-Forming Units AssayEmbryonic Stem CellsAdult Stem CellsGraft RejectionGranulocyte Colony-Stimulating FactorAllograftsCytomegalovirus InfectionsSalvage TherapyT-LymphocytesFollow-Up StudiesCells, CulturedAntineoplastic Combined Chemotherapy ProtocolsImmunosuppressionCell SeparationLymphoproliferative DisordersLymphoma, Non-HodgkinLeukemia, MyeloidOpportunistic InfectionsInfectionPrognosisImmunocompromised HostRisk FactorsCell ProliferationStem Cell FactorCyclosporineMultipotent Stem CellsMesenchymal Stromal Cells