Antibodies, NeutralizingHIV AntibodiesAntibodiesHIV Envelope Protein gp120Binding SitesAntigens, CD4Neutralization TestsAntibody SpecificityImmunoglobulin GSmall Molecule LibrariesAntibodies, MonoclonalImmunoglobulinsHIV-1Binding Sites, AntibodyProtein BindingAntibodies, ViralMolecular Sequence DataAntibodies, BacterialImmunoglobulin Fab FragmentsAntigen-Antibody ReactionsImmunoglobulin MAntibody FormationAmino Acid SequenceImmunoglobulin FragmentsImmunoglobulin ALigandsAntibody AffinityModels, MolecularImmunoglobulin Heavy ChainsAntibodies, Anti-IdiotypicImmunoglobulin Light ChainsProtein ConformationDrug DiscoveryHaptensImmunoglobulin Fc FragmentsEpitopesAntigen-Antibody ComplexImmunoglobulin Variable RegionProteinsFluorescent Antibody TechniqueImmunoglobulin Constant RegionsAntibodies, BispecificImmunoglobulin kappa-ChainsRabbitsAntigensImmune SeraCrystallography, X-RayCell LineBase SequenceDinitrophenolsImmunoglobulins, IntravenousHybridomasgamma-GlobulinsGenes, ImmunoglobulinAntibodies, ProtozoanImmunoelectrophoresisCross ReactionsKineticsIodine IsotopesAntibodies, NeoplasmAntibodies, AntinuclearImmunoglobulin EMice, Inbred BALB CAutoantibodiesB-LymphocytesRecombinant ProteinsImmunoglobulin A, SecretoryImmunoglobulin IsotypesAntibodies, FungalBinding, CompetitiveEnzyme-Linked Immunosorbent AssayCells, CulturedCell Adhesion MoleculesMicroscopy, ElectronMolecular WeightElectrophoresis, Polyacrylamide GelSingle-Chain AntibodiesAntibodies, BlockingProtein Structure, TertiaryRecombinant Fusion ProteinsDNAImmunoglobulin mu-ChainsImmunizationCloning, MolecularMutationT-LymphocytesImmunoglobulin lambda-ChainsPeptide FragmentsAntigens, SurfaceBlotting, WesternCattleEpitope MappingImmunization, PassiveImmunoglobulin DAntibodies, HeterophileImmunoenzyme TechniquesAntigens, BacterialImmunoglobulin IdiotypesPeptidesAntibodies, Catalytic