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  • Title: A double-antibody enzyme-linked immunosorbent assay for the detection of turkey hemorrhagic enteritis virus antibody and antigen.
    Author: Nazerian K, Lee LF, Payne WS.
    Journal: Avian Dis; 1990; 34(2):425-32. PubMed ID: 2164392.
    Abstract:
    A highly sensitive and specific double-antibody enzyme-linked immunosorbent assay (ELISA) is described for the detection of antigen and antibody of turkey hemorrhagic enteritis virus (HEV). The assay utilizes a virus-neutralizing monoclonal antibody (MAb) to capture the antigen and turkey antiserum against HEV as the second antibody. Microtiter plates were first coated with a dilution of 1:3000 of the MAb (300 ng immunoglobulin/well) and are used for detection of both antigen and antibody. For antibody detection, MAb-coated plates were treated with an appropriate dilution of a cell-culture-propagated HEV antigen and then reacted with the test turkey serum. For detection of HEV antigen, MAb-coated plates were treated with appropriate dilutions of test antigens and then reacted with purified anti-HEV turkey immunoglobulins. The assay for HEV antibody detection was more sensitive and specific than previously described single-antibody ELISAs. Using the double-antibody ELISA, it was found that the spleen of HEV-infected turkeys harbors very high levels of antigen. Traces of HEV antigen are present in some other organs. Infectivity assay for HEV is found to be about two orders of magnitude more sensitive than the ELISA for detection of virus.
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