Binding Sites, AntibodyAntibodies, NeutralizingAntibodies, MonoclonalAntibodiesHIV AntibodiesAntibody SpecificityEpitopesHIV Envelope Protein gp120Antigens, CD4Binding SitesNeutralization TestsAntibody AffinityMolecular Sequence DataHIV-1Antigen-Antibody ComplexAmino Acid SequenceAntibodies, ViralAntibodies, BacterialAntibody-Dependent Cell CytotoxicityRecombinant Fusion ProteinsAntibodies, NeoplasmImmunoglobulin GImmunoglobulin Fab FragmentsImmunoglobulin Variable RegionAntibody FormationImmunoglobulin Heavy ChainsImmunoglobulin Light ChainsChimeraProtein ConformationHybridomasFluorescent Antibody TechniqueBase SequenceImmunoglobulin Constant RegionsAntigen-Antibody ReactionsAntibodies, Anti-IdiotypicEnzyme-Linked Immunosorbent AssayCross ReactionsRecombinant ProteinsCell LineAutoantibodiesAntibodies, AntinuclearEpitope MappingAntibodies, ProtozoanGenes, ImmunoglobulinAntigens, NeoplasmAntibodies, Monoclonal, Murine-DerivedCHO CellsImmunoglobulin MProtein BindingBinding, CompetitiveSingle-Chain AntibodiesMice, Inbred BALB CCloning, MolecularRabbitsAntibodies, BispecificImmune SeraCricetinaeAntibodies, FungalGenetic VectorsTransfectionKineticsModels, MolecularAntigens, SurfaceAntigensImmunoglobulin FragmentsAntibodies, BlockingFluorescent Antibody Technique, IndirectPeptide FragmentsMolecular WeightImmunoglobulin AAntigens, BacterialElectrophoresis, Polyacrylamide GelRadioimmunoassayAntibodies, CatalyticAntibodies, HeterophileImmunizationImmunoblottingImmunoassayCattleBlotting, WesternCells, CulturedImmunoenzyme TechniquesGlycoproteinsHaptensAntigens, ViralAntibodies, Monoclonal, HumanizedPeptidesImmunosorbent TechniquesPeptide LibraryProtein Structure, TertiaryFlow CytometryAntibodies, AntiphospholipidDNAB-LymphocytesImmunohistochemistryCell MembraneEscherichia coliAutoantigensImmunologic TechniquesMutation