RadioimmunotherapyYttrium RadioisotopesRadioisotopesRheniumLutetiumIodine RadioisotopesAntibodies, MonoclonalHeterocyclic Compounds, 1-RingRadiometryAlpha ParticlesIndium RadioisotopesBismuthAntigens, CD20Radiotherapy DosageTissue DistributionLead RadioisotopesAstatineCarcinoembryonic AntigenPentetic AcidMice, NudeRadioimmunodetectionActiniumLymphoma, Non-HodgkinStreptavidinAntibodies, BispecificImmunoconjugatesRadiopharmaceuticalsNeoplasm TransplantationImmunotoxinsYtterbiumCopper RadioisotopesDose-Response Relationship, RadiationLymphoma, B-CellTransplantation, HeterologousHematologyAntibodies, NeoplasmNeptuniumSialic Acid Binding Ig-like Lectin 2Radiation DosageIsotope LabelingBiotinCombined Modality TherapyBeta ParticlesOrganometallic CompoundsAvidinHeterocyclic CompoundsXenograft Model Antitumor AssaysAntibodies, Monoclonal, Murine-DerivedLymphoma, FollicularBone MarrowColonic NeoplasmsImmunoglobulin FragmentsWhole-Body CountingNuclear MedicineImmunoglobulin Fab FragmentsRadionuclide GeneratorsMedicine in ArtTetrahydrouridineRelative Biological EffectivenessCell Line, Tumor