Abstract
The ribonucleoprotein gene of infectious hematopoietic necrosis virus (IHNV) has been expressed in Escherichia coli as a trpE fusion protein. This viral protein does not induce protective immunity to lethal IHNV infection in fish, and virus-neutralizing antibodies do not react with this viral protein. However, when it was administered with a bacterial lysate containing a region of the IHNV glycoprotein, there was enhanced resistance in immunized fish to lethal virus infection.
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