One example of a way people have used this, is that they've taken the gene that ordinarily produces a milk protein.

利用这种方式的一个例子就是,他们把原本产羊奶蛋白的基因剔除

耶鲁公开课 - 生物医学工程探索课程节选

In this case the promoter, which is a sequence of DNA that is positioned right in front of the gene of interest, the promoter is the betagalactoglobulin promoter in this case, and betagalactoglobulin is a milk protein.

这里涉及到的启动子,也是一段DNA序列,它必须刚好位于目的基因序列前端,我们用到的是β-乳球蛋白启动子,β-乳球蛋白是乳汁中的一种蛋白

耶鲁公开课 - 生物医学工程探索课程节选