家蚕基因工程表达系统（BmNPV）是在真核生物整体水平进行的外源基因表达系统，必须对其安全性进行研究，以确保该表达系统及其产品对人的安全。本室工作人员用PCR扩增技术及细菌培养方法对家蚕的多种成份进行了人类常见病原菌及病毒和支原体的检测，结果表明，家蚕的多种成分未分离到常见的病原菌、病毒等其它病原体。除EB、HPV病毒PCR检测样本有一区带出现外，其余都为阴性。 Bombyx mori genetic engineering expression system (BmNPV) is an exogenous gene expression system carried out on the whole level of eukaryotes, and its safety must be studied to ensure the safety of the expression system and its products to human beings. The laboratory staff PCR amplification technology and bacterial culture methods for a variety of silkworm components of human common pathogens and viruses and mycoplasma detection, the results show that the silkworm has not isolated a variety of common pathogens, viruses and other pathogens . In addition to EB, HPV virus PCR test samples have a zone outside, the rest are negative.