Blood DonorsUnrelated DonorsBone Marrow TransplantationTissue DonorsGraft vs Host DiseaseHistocompatibility TestingHistocompatibilityTransplantation, HomologousFetal BloodBone MarrowTransplantation ConditioningBone Marrow CellsHost vs Graft ReactionLiving DonorsGraft SurvivalHematopoietic Stem Cell TransplantationWhole-Body IrradiationLeukemiaHLA AntigensLymphocyte DepletionRadiation ChimeraTransplantation ChimeraHematologic NeoplasmsSpinal CordCord Blood Stem Cell TransplantationBlood BanksHematopoietic Stem CellsDonor SelectionRecurrenceSurvival AnalysisTreatment OutcomeImmunosuppressive AgentsAnemia, AplasticGraft RejectionLeukocyte TransfusionSpinal Cord InjuriesT-LymphocytesAntilymphocyte SerumPeripheral Blood Stem Cell TransplantationPrecursor Cell Lymphoblastic Leukemia-LymphomaAntigens, CD34Infant, NewbornVidarabineMyeloablative AgonistsRetrospective StudiesSiblingsDisease-Free SurvivalMice, Inbred C57BLUmbilical CordSeroepidemiologic StudiesHematologic DiseasesBusulfanBlood TransfusionLeukemia, Myelogenous, Chronic, BCR-ABL PositiveTime FactorsMyelodysplastic SyndromesAcute DiseaseLeukemia, Myeloid, AcuteSurvival RateHLA-DP beta-ChainsBlood SafetyHematopoiesisBone Marrow DiseasesTissue and Organ ProcurementDirected Tissue DonationPolymerase Chain ReactionCells, CulturedBone Marrow ExaminationTransplantation ImmunologyStem Cell TransplantationTransplantation, AutologousAllograftsColony-Forming Units AssayPregnancyRemission InductionHLA-A AntigensBone Marrow NeoplasmsEnzyme-Linked Immunosorbent AssayCell DifferentiationBlood PreservationHepatitis CHLA-DP AntigensFlow CytometryHemibody IrradiationHepatitis C AntibodiesCytomegalovirus InfectionsRisk FactorsCyclosporineFollow-Up StudiesBlood Cell CountTransplantsKidney TransplantationInfectionHepatitis BLife TablesHistiocytosis, Non-Langerhans-CellActuarial AnalysisGenotypeMethotrexateSevere Combined Immunodeficiency