Antibodies, NeutralizingHIV AntibodiesAntibodiesHIV Envelope Protein gp120Binding SitesAntigens, CD4Neutralization TestsAntibody SpecificitySmall Molecule LibrariesHIV-1Antibodies, MonoclonalBinding Sites, AntibodyProtein BindingAntibodies, ViralMolecular Sequence DataAntigen-Antibody ReactionsAntibodies, BacterialAntibody FormationAmino Acid SequenceLigandsImmunoglobulin Fab FragmentsModels, MolecularAntibody AffinityImmunoglobulin FragmentsDrug DiscoveryAntibodies, Anti-IdiotypicProtein ConformationHaptensImmunoglobulin GEpitopesProteinsAntigen-Antibody ComplexAntibodies, BispecificFluorescent Antibody TechniqueImmunoglobulin Fc FragmentsRabbitsCrystallography, X-RayAntigensImmune SeraImmunoglobulin Heavy ChainsImmunoglobulin Light ChainsDinitrophenolsCell LineImmunoglobulin Variable RegionImmunoglobulin Constant RegionsBase SequenceImmunoglobulinsKineticsHybridomasAntibodies, NeoplasmIodine IsotopesAntibodies, ProtozoanAntibodies, AntinuclearCross Reactionsgamma-GlobulinsImmunoelectrophoresisRecombinant ProteinsImmunoglobulin MAutoantibodiesBinding, CompetitiveMice, Inbred BALB CAntibodies, FungalImmunoglobulin kappa-ChainsMicroscopy, ElectronCells, CulturedCell Adhesion MoleculesSingle-Chain AntibodiesAntibodies, BlockingMolecular WeightProtein Structure, TertiaryElectrophoresis, Polyacrylamide GelRecombinant Fusion ProteinsPeptide FragmentsEpitope MappingAntibodies, CatalyticAntibodies, HeterophileBlotting, WesternDNAMutationCattleFluorescent Antibody Technique, IndirectPeptidesCloning, MolecularImmunoglobulin AEscherichia coliAntigens, SurfaceEnzyme-Linked Immunosorbent AssayDNA-Binding ProteinsPromoter Regions, GeneticTranscription FactorsAntibodies, Monoclonal, HumanizedImmunizationSequence Homology, Amino AcidT-LymphocytesCell MembraneImmunohistochemistryGlycoproteinsImmunoblottingMembrane GlycoproteinsImmunoenzyme Techniques