Out of all the genes that are on the human genome which fraction is this particular cell using, which fraction is it expressing determines what proteins are present in the cell, determines what work or what activities the cell can engage in.

人类基因组全部基因中的,特定细胞所表达的基因片段,细胞表达的是哪段基因,决定了细胞中存在什么样的蛋白,决定了细胞会有什么样的功能,或者参与何种生命活动

耶鲁公开课 - 生物医学工程探索课程节选

The other thing that it does is that when a virus is inside these cells making its proteins, some of those proteins get processed or digested into small fragments that are themselves antigens.

HC的另一项作用是,当病毒在细胞内表达蛋白时,一些蛋白被加工,或者,分解成小片段而成为抗原

耶鲁公开课 - 生物医学工程探索课程节选