It's a biological system that you've engineered from taking cells from one organism and cloning them and developing a whole other organism.

所谓生物系统的工程化,就是从一种生物体内中取出细胞并克隆,将它们培养成为另一个有机整体

耶鲁公开课 - 生物医学工程探索课程节选

When transcription happens and it turns out that there's a whole biology associated with this, including molecules that are floating around inside your cells called transcription factors, and their job-- they are molecules that are about particular genes and what some of the sequences and are able to turn on those genes inside cells, to make them transcribe.

研究证明,当细胞转录时,还有与之相关的一整套生物机制在运作,包括一种在你细胞中飘浮着的,称为转录因子的分子,它们的工作就是,它们知道该转录哪一段基因,该转录哪一段序列,然后把这些细胞中的基因激活,进行转录

耶鲁公开课 - 生物医学工程探索课程节选