GammaretrovirusXenotropic murine leukemia virus-related virusRetroviridae InfectionsAntibodiesPhascolarctidaeWhale, KillerLeukemia Virus, MurineEndogenous RetrovirusesDNA ContaminationAntibody SpecificityAntibodies, ViralTumor Virus InfectionsLeukemia Virus, FelineAntibodies, BacterialAntibodies, MonoclonalFatigue Syndrome, ChronicTerminal Repeat SequencesMolecular Sequence DataReceptors, VirusAntibody FormationGene Products, envAntibodies, NeutralizingAntibody AffinityAmino Acid SequenceFluorescent Antibody TechniquePhylogenyAntibodies, Anti-IdiotypicCell LineBinding Sites, AntibodyDNA, ViralHIV AntibodiesEpitopesAntibodies, NeoplasmAntibodies, ProtozoanAntibodies, AntinuclearProstatic NeoplasmsCross ReactionsImmunoglobulin MAutoantibodiesAntibodies, FungalNeutralization TestsAntigen-Antibody ReactionsAntibodies, BispecificSingle-Chain AntibodiesMice, Inbred BALB CAntibodies, BlockingImmunoglobulin GAntigen-Antibody ComplexImmunoglobulin Fab FragmentsAntibodies, HeterophileAntibodies, CatalyticRabbitsImmunoglobulin AAntibodies, Monoclonal, HumanizedFluorescent Antibody Technique, IndirectHybridomasImmune SeraEpitope MappingAntibodies, AntiphospholipidImmunizationAntigens