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

You could use cell culture, so you don't have to grow the virus naturally in animals.

你可以利用细胞培养技术,那你就不必在动物身上培养病毒

耶鲁公开课 - 生物医学工程探索课程节选

We have techniques of recombinant DNA, and those can be used to produce either modified viruses, we'll talk about that.

我们拥有重组DNA技术,它可以用来生产任一种减毒病毒,这个以后会再讲

耶鲁公开课 - 生物医学工程探索课程节选