Antibody-Dependent Cell CytotoxicityCytotoxicity, ImmunologicKiller Cells, NaturalReceptors, IgGCytotoxicity Tests, ImmunologicAntibodies, MonoclonalReceptors, FcAntigens, CD20Immunoglobulin Fc FragmentsAntibodies, Monoclonal, Murine-DerivedImmunoglobulin GAntibodies, NeoplasmCell Line, TumorCell SurvivalLymphocytesFucoseCell LineAntineoplastic AgentsComplement System ProteinsAntibodies, BispecificTumor Cells, CulturedInterleukin-2Flow CytometryHIV AntibodiesImmunity, CellularImmunotherapyKiller Cells, Lymphokine-ActivatedAntibodies, Monoclonal, HumanizedDose-Response Relationship, ImmunologicMice, SCIDMonocytesAntigens, NeoplasmRosette FormationAntigens, CD56PerforinDrug Screening Assays, AntitumorMice, Inbred BALB CT-LymphocytesNeutrophilsCells, CulturedAntibody SpecificityK562 CellsGPI-Linked ProteinsLymphocyte ActivationGranzymesApoptosisAntibodiesAntigens, CDLeukemia, B-CellCell SeparationAntibodies, ViralGangliosidesXenograft Model Antitumor AssaysLysosomal-Associated Membrane Protein 1Leukocytes, MononuclearMacrophagesAntigen-Antibody ComplexDose-Response Relationship, DrugInterferon-gammaT-Lymphocytes, CytotoxicCell DeathAntigens, SurfaceReceptor, erbB-2Lymphoma, B-CellRecombinant ProteinsNeoplasmsReceptors, CCR4SpleenImmunization, PassiveCricetulusLectinsLymphomaBinding Sites, AntibodyErythrocytesPhagocytosisTime FactorsLeukocyte CountCricetinaeNeoplasms, ExperimentalMelanomaCHO CellsB-LymphocytesNeoplasm TransplantationComplement ActivationComplement C1qCytotoxinsBurkitt LymphomaEnzyme-Linked Immunosorbent AssayMice, Inbred C57BLMice, NudeLeukocytesImmunoglobulin Fab FragmentsNeutralization TestsRecombinant Fusion ProteinsHIV-1Receptors, ImmunologicEpitopesLeukemia, Lymphocytic, Chronic, B-CellCell ProliferationImmune Sera