After duck hepatitis virus(DHV) was digested by proteinase Kits RNA was
extracted by phenol-chloroform and purified by Qligo(dT) magnet bead Its
molecular weight was about 7-8kb according to electrophoresis . cDNA of DHV
RNA was synthesized using Oligo(dT)15 primer and avian myeloblastosis
virus(AMV) reverse transcriptase. After it was linked with EcoR I adaptor,and
cloned into the EcoR I site of pUC 19. With...