Bone Marrow TransplantationBone MarrowBone Marrow CellsFetal BloodUmbilical CordTransplantation, HomologousCord Blood Stem Cell TransplantationBone and BonesGraft vs Host DiseaseTransplantation, AutologousHematopoietic Stem CellsWhole-Body IrradiationHematopoietic Stem Cell TransplantationTransplantation ConditioningAnemia, AplasticLeukemiaTransplantation ChimeraBone Marrow DiseasesGraft SurvivalHistocompatibility TestingBone Marrow PurgingAntigens, CD34Tissue DonorsHematopoiesisBone Marrow ExaminationBone RemodelingBlood BanksBusulfanBone Marrow NeoplasmsLiver TransplantationColony-Forming Units AssayHistocompatibilityCell DifferentiationUmbilical VeinsCells, CulturedMice, Inbred C57BLHematologic NeoplasmsCyclophosphamideTime FactorsUmbilical ArteriesTransplantation, IsogeneicBone DensityRadiation ChimeraInfant, NewbornLeukemia, Myeloid, AcuteRecurrenceFlow CytometryTreatment OutcomeStem Cell TransplantationCell SeparationPrecursor Cell Lymphoblastic Leukemia-LymphomaLeukemia, Myelogenous, Chronic, BCR-ABL PositiveCombined Modality TherapyPregnancyBone ResorptionKidney TransplantationT-LymphocytesImmunosuppressive AgentsHematologic DiseasesImmunophenotypingHLA AntigensRemission InductionStem CellsLeukemia, MyeloidAntigens, CDGraft RejectionAcute DiseaseSpinal CordMesenchymal Stromal CellsTransplantation ImmunologySevere Combined ImmunodeficiencyHepatic Veno-Occlusive DiseaseGraft vs Host ReactionImmunosuppressionMyelodysplastic SyndromesLymphocyte DepletionBlood CellsBlood Cell CountRetrospective StudiesLymphoma, Non-HodgkinBone NeoplasmsCell LineageLeukocyte CountChimeraSurvival AnalysisStromal CellsLeukocyte TransfusionGranulocyte Colony-Stimulating FactorSpleenPancytopeniaGranulocytesBone DevelopmentGraft vs Leukemia EffectHeart TransplantationMice, SCIDMice, Inbred BALB CCell Culture TechniquesBone DiseasesCytomegalovirus InfectionsFollow-Up Studies