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  • Title: Indirect micro-enzyme-linked immunosorbent assay for the detection of antibodies to Mycoplasma synoviae and M. gallisepticum.
    Author: Opitz HM, Duplessis JB, Cyr MJ.
    Journal: Avian Dis; 1983; 27(3):773-86. PubMed ID: 6639552.
    Abstract:
    The sensitivity and specificity of the indirect micro-enzyme-linked immunosorbent assay (ELISA) was compared with that of the rapid serum-plate test (RSPT) and the hemagglutination-inhibition test (HIT) in detecting antibodies to Mycoplasma gallisepticum (MG) and M. synoviae (MS). Membrane antigens of MG strain S6 and MS strain NEL 61800 were used. ELISA was performed with single MS and single MG antigens and a combined MS/MG antigen. The MS-ELISA was as sensitive as the MS-RSPT and more sensitive than and as specific as the MS-HIT in detecting antibodies to MS. The MG-ELISA was less sensitive than the MG-RSPT and slightly less sensitive than the MG-HIT in detecting antibodies to MG in chickens experimentally infected with MG R strain but more sensitive in detecting antibodies in chickens infected with MG F strain. MG-ELISA resulted in fewer cross-reactions than the MG-RSPT but more than the MG-HIT. The combined MG/MS-ELISA was as sensitive as the ELISA with its individual antigen components. No nonspecific reactions were observed with sera from MG/MS-free flocks. The combined MG/MS-ELISA was found to be a practical screening test for antibodies to both MS and MG. Further improvement of the sensitivity and the specificity of the MG antigen is desirable.
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