packaging cell line

例句：

1. 1.The researchers developed a packaging cell line that can be used for drug testing.
   研究人员开发了一种可用于药物测试的包装细胞系。
2. 2.This packaging cell line has been proven to be highly efficient in producing vaccines.
   这种包装细胞系已被证明在生产疫苗方面非常高效。
3. 3. The packaging cell line is being used to study the effects of environmental factors on plant growth.
   这个包装细胞系正在被用来研究环境因素对植物生长的影响。