Cord Blood Stem Cell TransplantationHematopoietic Stem Cell TransplantationFetal BloodTransplantation, HomologousTransplantation ConditioningGraft vs Host DiseaseHematopoietic Stem CellsHematologic NeoplasmsHistocompatibility TestingStem Cell TransplantationTransplantation ChimeraUmbilical CordGraft SurvivalBlood BanksTransplantation, AutologousMyeloablative AgonistsTissue DonorsChimerismTreatment OutcomeHematologic DiseasesLeukemiaStem CellsHistocompatibilityGraft vs Leukemia EffectPeripheral Blood Stem Cell TransplantationBone Marrow TransplantationHLA AntigensWhole-Body IrradiationVidarabineTransplantsLiver TransplantationAntigens, CD34VolvariellaRetrospective StudiesAnemia, AplasticAllograftsRecurrenceHematopoiesisAntilymphocyte SerumUnrelated DonorsInfant, NewbornBlood DonorsDisease-Free SurvivalImmunosuppressive AgentsKidney TransplantationBusulfanColony-Forming Units AssayTime FactorsHematopoietic Stem Cell MobilizationCell DifferentiationCytomegalovirus InfectionsLeukemia, Myeloid, AcuteMyelodysplastic SyndromesSurvival AnalysisSurvival RateBone Marrow CellsCell TransplantationGraft RejectionPrecursor Cell Lymphoblastic Leukemia-LymphomaMesenchymal Stem Cell TransplantationCell LineageFlow CytometryImmunogenetic PhenomenaTransplantation ImmunologyCells, CulturedAcute DiseaseHeart TransplantationSiblingsUmbilical VeinsImmunophenotypingDonor SelectionRemission InductionMesenchymal Stromal CellsCombined Modality TherapyCell SeparationLung TransplantationFollow-Up StudiesHepatic Veno-Occlusive DiseaseMultiple MyelomaUmbilical ArteriesTransplantation, IsogeneicEmbryonic Stem CellsOrgan TransplantationCytomegalovirusSevere Combined ImmunodeficiencyBone MarrowPregnancyGraft vs Tumor EffectMice, Inbred C57BLInfectionMice, SCIDStem Cell NicheCell Culture TechniquesMelphalanAdult Stem CellsTransplantationLymphocyte TransfusionT-LymphocytesRisk FactorsGranulocyte Colony-Stimulating Factor