When they do that they can actually engulf the bacteria in a process called phagocytosis and break them down into antigens.

免疫细胞确实是将细菌整个吞进了肚内,这一过程称为吞噬作用,并将细菌分解成小抗原

耶鲁公开课 - 生物医学工程探索课程节选

This is a way for the immune system to recognize things that are going wrong inside the cell protected from antibodies.

这是免疫系统识别,抗体不能识别的细胞内病变的方法

耶鲁公开课 - 生物医学工程探索课程节选

Well, the way that your immune system recognizes it is that all the cells of our body express a molecule on their surface, a membrane protein called the MHC1 complex.

而免疫系统识别的方法是,身体内所有细胞在其表面表达一种分子,一种叫做MHC1复合体的膜蛋白

耶鲁公开课 - 生物医学工程探索课程节选