更重要的是，这种减毒活病毒结种于未孵化的鸟类后可提供有效的预防。

More importantly, this live attenuated virus provided effective protection when it was administered to birds before they had hatched.

youdao

在南非追踪研究最近被感染了因突变而减毒的艾滋病毒而且无上述优势人类白细胞抗原的21名妇女。

The South African study tracked 21 women without the beneficial form of HLA who were recently infected with the weakened strain of HIV.

youdao

目前使用的载体大多是减毒或修改过的病毒。

Many of the vectors currently in use are based on attenuated or modified versions of viruses.

youdao

We talked about attenuating in the laboratory, using cell culture techniques and what we know about mutating viruses.

我们讲过实验室中,利用细胞培养技术培养减毒疫苗,以及我们所了解的减毒病毒

耶鲁公开课 - 生物医学工程探索课程节选

This was not a naturally occurring attenuated virus as used in smallpox, but a virus that was attenuated in the laboratory, basically by propagating it in culture and looking for mutants that were formed as you propagated this virus under different experimental conditions.

这不是在制造天花疫苗时,使用的那种天然减毒病毒,而是一种在实验室中被人工弱化的病毒,基本上是通过在细胞中培养繁殖后,从这些培养出来的病毒中挑选出,不同实验环境下的变异体

耶鲁公开课 - 生物医学工程探索课程节选