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  • Title: Evaluation of three LPS-specific monoclonal antibodies for the immunodiagnosis of bovine brucellosis.
    Author: Yong WK, Edwards LD, Searson JE.
    Journal: Res Vet Sci; 1989 May; 46(3):413-5. PubMed ID: 2472660.
    Abstract:
    Bovine sera collected during the Australian brucellosis eradication campaign were used to assess the value of three monoclonal antibodies (MAb Bruce 1, 4 and 7) for the immunodiagnosis of bovine brucellosis in a competitive enzyme immunoassay (CEIA). Each MAb reacted to a different epitope of lipopolysaccharide molecules on the cell surface of Brucella abortus. When the sensitivity of the CEIA was set at 100 per cent so that all infected animals were identified, the specificity of the test using MAb Bruce 1 and Bruce 7 was 69 per cent and 52 per cent, respectively. On the other hand, a quarter of the sera from infected cattle did not inhibit the binding of MAb Bruce 4 to the antigen. With a maximum sensitivity of 75 per cent, the specificity of the CEIA using MAb Bruce 4 was 94 per cent. However, all three MAb cross reacted with sera from sheep infected with Bovis, Histophilus ovis and Actinobacillus seminis.
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