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  • Title: Idiotypic analysis of monoclonal antibodies to poly(Glu60Ala30Tyr10).
    Author: Ju ST, Pierres M, Waltenbaugh C, Germain RN, Benacerraf B, Dorf ME.
    Journal: Proc Natl Acad Sci U S A; 1979 Jun; 76(6):2942-6. PubMed ID: 288079.
    Abstract:
    Fifteen hybridoma anti-poly(Glu60Ala30Tyr10) (anti-GAT) antibodies were analyzed for the presence of a common set of idiotypic specificities associated with murine anti-GAT antibodies, termed CGAT idiotype, which are present on the anti-GAT antibodies of all mouse strains. Thirteen of these monoclonal anti-GAT antibodies expressed a major fraction of CGAT idiotypic specificities. However, the remaining fraction of CGAT idiotypic specificities were not detected in individual or pooled hybridoma anti-GAT antibodies. Anti-idiotypic antisera made against each of the 15 hybridoma anti-GAT antibodies preferentially bound homologous ligand and showed minimal binding activity to specifically purified serum anti-GAT antibodies. Furthermore, the diversity of the hybridoma anti-GAT antibodies was demonstrated by the presence of individual idiotypic specificities on each of the hybridoma anti-GAT antibodies. However, relatedness among some of the hybridoma antibodies was also apparent since idiotypic analysis revealed that some hybridoma anti-GAT antibodies shared cross-reactive idiotypic specificities not associated with CGAT idiotype. The genetic mechanisms which could account for the generation of such antibody diversity are discussed.
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