Abstract
The present chapter describes a simple and economic indirect enzyme immunoassay (ELISA ) for African swine fever virus (ASFV) antibody detection based on the use of the soluble cytoplasmic fraction of ASFV-infected monkey stable cells (MS). The soluble antigen proteins of ASFV-infected cells are separated by sucrose precipitation centrifugation, and the supernatant above the sucrose layer is used as an ELISA antigen. The test serum sample reacts with the cytoplasmic soluble fraction, and antibodies are detected using a protein A-peroxidase conjugate. This crude antigen is currently recommended as a test reagent in screening and diagnostic tests by the World Organization for Animal Health (OIE).
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