对虾白斑症病毒可通过人工投喂感染克氏螯虾 ,病程发展迅速 ,死亡率高 .该病毒既可见在胞核中复制 ,也常见于胞质中装配 .通过差速离心 ,蔗糖垫层离心或密度梯度离心后 ,再将分离物中细胞源核酸消化掉 ,可提取出较纯的病毒 DNA. White spot virus shrimp can be infected by artificial feeding Crayfish, rapid course of development, high mortality, the virus can be seen both in the nucleus replication, but also common in the cytoplasm assembly by differential centrifugation, sucrose cushion centrifuge Or density gradient centrifugation, and then isolate the cell source nucleic acid digestion, can extract more pure viral DNA.