What I want you to remember now is that abundant cell proliferation takes place during development.

这节课我希望你能记住,发育过程中伴有大量的细胞增殖过程

耶鲁公开课 - 生物医学工程探索课程节选

So having a place that the cell knows - where the cell knows how to replicate is important and so plasmids have an origin of replication.

所以得有一个细胞能识别的区域,能使细胞知道,怎样来复制 这很重要,因此质粒上带有一个复制起点

耶鲁公开课 - 生物医学工程探索课程节选

Cell division takes place within an organism.

细胞分化发生在有机体中

耶鲁公开课 - 生物医学工程探索课程节选

Now when we put insulin in this place behind the right promoter, the cell thinks that it still has the lacZ gene present which it needs for its metabolism.

现在我们把胰岛素基因,放在正确的启动子后面,宿主细胞就会认为,它仍然有新陈代谢所需的lacZ基因

耶鲁公开课 - 生物医学工程探索课程节选