Lymphocystis disease(LCD),an important fish disease,is a chronic disease characterized by papilloma-like lesions typically on skin,fins and tail.The causative agent of the lymphocystis disease,lymphocystis disease virus(LCDV),has been reported in over one hundred teleost species and it has a world wide geographical distribution.In China LCD has resulted in a great economic loss in marine culture industry and become factors restricting aquaculture development.In this study,the diseased flounder Paralichthys ...