It's this tube-like structure, which is made of many, many epithelial cells all directly adjacent to each other, is what separates the outside world from our internal bodies.

这些管状结构,也是由许许多多上皮细胞,互相连接而成的,它使体内和体外,区分开来

耶鲁公开课 - 生物医学工程探索课程节选

Now that's going to be important when we talk about making human gene - making human proteins inside alternate hosts like bacteria, that they can't do all the things that your cells can do.

这一步骤在我们谈到,利用像细菌那样的宿主,来生成人类蛋白时非常重要,因为细菌并不具备人类细胞的全部功能

耶鲁公开课 - 生物医学工程探索课程节选

Then those antigens get expressed with MHC just like they did in all the other cells inside the host, but particular cells of the innate immune system have a different kind of MHC called MHC2.

这些抗原同MHC共表达,就如同抗原在其他宿主细胞中那样,但先天免疫系统有一类特殊的免疫细胞,具有一种称为MHC2的不同MHC

耶鲁公开课 - 生物医学工程探索课程节选