This process of using a biological event like resistance to Ampicillin in order to pick out the cell population that you're interested in is called selection.

这个利用生物特性,如对氨苄青霉素的抗性,来挑出你所感兴趣的细胞的过程叫筛选

耶鲁公开课 - 生物医学工程探索课程节选

We're using biological mechanisms and we're growing cells in order to accomplish it.

我们靠生物机制,和培养细胞来达到目的

耶鲁公开课 - 生物医学工程探索课程节选