ImmunoglobulinsImmunoglobulin GImmunoglobulin AImmunoglobulin MPoint MutationMutation, MissenseMutationImmunoglobulin Heavy ChainsImmunoglobulins, IntravenousGenes, ImmunoglobulinImmunoglobulin Light ChainsFrameshift MutationImmunoglobulin kappa-ChainsImmunoglobulin EImmunoglobulin Variable RegionGerm-Line MutationImmunoglobulin A, SecretoryBase SequenceImmunoglobulin mu-ChainsMolecular Sequence DataPedigreeImmunoglobulin lambda-ChainsImmunoglobulin IsotypesImmunoglobulin DB-LymphocytesImmunoglobulin Constant RegionsImmunoglobulin Fc FragmentsAmino Acid SequenceMutation RatePolymerase Chain ReactionExonsImmunoglobulin Class SwitchingHeterozygoteImmunoglobulin gamma-ChainsImmunoglobulin Fab FragmentsAmino Acid SubstitutionImmunoglobulin J-ChainsAllelesDNA Mutational AnalysisImmunoglobulin FragmentsImmunoglobulin AllotypesReceptors, Polymeric ImmunoglobulinCell LineImmunoglobulin Joining RegionMutagenesis, Site-DirectedPolymorphism, Single-Stranded ConformationalAntibodies, BacterialSequence Analysis, DNAGenotypeHomozygoteMutagenesisSomatic Hypermutation, ImmunoglobulinCodon, NonsenseEnzyme-Linked Immunosorbent AssayReceptors, Antigen, B-CellProtein Structure, TertiaryDNA PrimersCloning, MolecularAntibody SpecificityDNAMyeloma ProteinsGenes, Immunoglobulin Heavy ChainPhenotypeEscherichia coliGenes, RecessiveSequence DeletionBinding SitesPlasmacytomaDNA-Binding ProteinsModels, MolecularImmunoglobulin Switch RegionProtein BindingChromosome MappingSequence Homology, Amino AcidImmunoglobulin delta-ChainsAntibodies, MonoclonalImmunoglobulin alpha-ChainsGenes, DominantGenetic TestingAntibodies, Anti-IdiotypicImmunoglobulin IdiotypesAgammaglobulinemiaAntibodies, ViralBacterial ProteinsSequence AlignmentCodonGenesgamma-GlobulinsTranscription FactorsRecombination, GeneticSuppression, GeneticMembrane ProteinsMice, Inbred BALB CGene DeletionTranscription, GeneticRecombinant ProteinsTransfectionRNA, MessengerSecretory ComponentAntibody Formation