摘要
Ⅰ. INTRODUCTION The cytoplasmic polyhedrosis virus (CPV)of the silkworm is one of the double-stranded RNA (dsRNA) virus groupt. The virus particles of CPV contain 10 segments of the double-stranded RNA genome and the RNA replicases. As mentioned in the previous paper, the RNA replicase was isolated in the form of genome-replicase