Mouse Anti-HBV Envelope Antigen Monoclonal antibody for ELISA. Suitable for use in ELISA. Each laboratory should determine an optimum working titer for use in its particular application. Other applications have not been tested but use in such assays should not necessarily be excludedHepatitis B e-antigen (HBeAg) is a viralprotein associated with HBV infections. Unlike the surface antigen, thee-antigen is found in the blood only when there are viruses also present.When the virus goes into "hiding," the e-antigen will no longer be present inthe blood. HBeAg is often used as a marker of ability to spread the virus toother people (infectivity). Measurement of e-antigen may also be used tomonitor the effectiveness of HBV treatment; successful treatment will usuallyeliminate HBeAg from the blood and lead to development of antibodies againste-antigen (anti-HBe). There are some types (strains) of HBV that do not makee-antigen; these are especially common in the Middle East and Asia. In areaswhere these strains of HBV are common, testing for HBeAg is not very useful
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