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  • Title: Monoclonal antibody analysis of serotype-restricted and unrestricted bluetongue viral antigenic determinants.
    Author: Appleton JA, Letchworth GJ.
    Journal: Virology; 1983 Jan 30; 124(2):286-99. PubMed ID: 6186076.
    Abstract:
    Twenty-one monoclonal antibodies that react with bluetongue virus (BTV) and have restricted or unrestricted serotype specificities were identified in culture supernatants of hybridomas derived from lymphocytes of mice immunized with BTV serotype 17. Hybridomas were screened and antibody specificities characterized in a solid-phase radioimmunoassay and by immunoprecipitation with radiolabeled, BTV 17-infected cell lysates. Three general serotype specificities were demonstrated by 13 antibodies that precipitated structural viral protein 9 (VP 9). One antibody precipitated VP 7, a 48,000 dalton nonstructural protein, and reacted in radioimmunoassay with 20 BTV serotypes and Epizootic Hemorrhagic Disease of Deer Virus serotype 1 (EHDV 1), EHDV 2, and Ibaraki virus, but not with uninfected cells. One serotype-specific antibody neutralized infectivity, inhibited hemagglutination by BTV 17, and precipitated VP 2 and VP 3. A second antibody, with restricted serotype specificity, precipitated VP 2 and VP 8. These results confirm those of others (Huismans and Erasmus, Onderstepoort J. Vet. Res. 48, 51-58, 1981) that BTV serotype-specific and neutralizing epitopes are associated with VP 2.
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