AntibodiesImmunoglobulin GAntibody SpecificityAntibodies, BacterialAntibodies, ViralAntibodies, MonoclonalImmunoglobulin MAntibody FormationAntibodies, NeutralizingAntibody AffinityImmunoglobulin AAntibodies, Anti-IdiotypicEnzyme-Linked Immunosorbent AssayAntibodies, ProtozoanFluorescent Antibody TechniqueBinding Sites, AntibodyEpitopesAutoantibodiesHIV AntibodiesCross ReactionsAntibodies, AntinuclearAntibodies, NeoplasmSeroepidemiologic StudiesReceptors, IgGAntibodies, FungalHIV Envelope Protein gp120Neutralization TestsMice, Inbred BALB CAntigen-Antibody ReactionsMolecular Sequence DataImmunoglobulin Fab FragmentsImmunizationAntigen-Antibody ComplexAmino Acid SequenceAntigens, BacterialImmunoglobulin IsotypesAntibodies, BispecificRabbitsImmune SeraFluorescent Antibody Technique, IndirectHIV Envelope Protein gp41Serologic TestsIgG DeficiencyAntigensImmunoglobulinsImmunization, PassiveCytokine Receptor gp130Immunoglobulin EAntibodies, HeterophileImmunoenzyme TechniquesRecombinant ProteinsB-LymphocytesAntibodies, BlockingSingle-Chain AntibodiesImmunoassayEpitope MappingHybridomasAntibodies, HelminthSensitivity and SpecificityCell LineAntigens, ViralImmunity, Maternally-AcquiredAntigens, ProtozoanAntibodies, CatalyticAntibodies, AntiphospholipidImmunoblottingAntigens, SurfaceBlotting, WesternImmunoglobulin A, SecretoryVaccinationHemagglutination TestsBacterial VaccinesT-LymphocytesHaptensHemagglutination Inhibition TestsRadioimmunoassayToxoplasmosisMolecular WeightComplement Fixation TestsTime FactorsCells, CulturedAntibodies, Monoclonal, HumanizedReceptors, FcElectrophoresis, Polyacrylamide GelToxoplasmaChlamydophila pneumoniaeGlycoproteinsPolysaccharides, BacterialLupus Erythematosus, SystemicComplement System ProteinsImmunoglobulin Fc FragmentsSpleenHIV Envelope Protein gp160Immunologic TechniquesAntigens, HelminthAutoantigensTetanus ToxoidMice, Inbred C57BLIsoantibodiesImmunoglobulin Variable Region