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  • Title: Isolation characterization and idiotype of Lewis rat antibodies against peptide 68-88 of guinea pig myelin basic protein.
    Author: Fritz RB, Desjardins AE, Shapira R.
    Journal: Mol Immunol; 1982 May; 19(5):665-70. PubMed ID: 6180311.
    Abstract:
    Antibodies against the 19 amino acid encephalitogenic peptide )residues 68-88) of guinea pig myelin basic protein (GPBP) were raised in Lewis (Le) rats. Anti-peptide antibodies were isolated from immune ascitic fluids by affinity chromatography using peptide 43-88-Sepharose 4B. The purified antibodies were characterized by sodium dodecyl sulphate-polyacrylamide gel electrophoresis and isoelectric focusing. Immunoglobulin class was determined by radioimmunoassay. Anti-idiotypic (anti-ID) antibodies were raised in a rabbit using purified anti-peptide antibodies from a single rat. The results of these experiments showed antibody heterogeneity both within an individual anti-peptide antiserum and between antisera from different rats. Antibody activity was found in IgG1, IgG2, and IgE immunoglobulin classes. Isoelectric focusing revealed multiple bands within a population of purified antibodies with significant pattern variation from one antiserum to another. Idiotypic characterization showed various levels of cross-reactive idiotypes present in some sera while these were absent in others.
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