英语语法分析

Proinsulin is formed in rough endoplasmic reticulum.

胰岛素原在粗糙型内质网中合成。

Proinsulin is formed in rough endoplasmic reticulum .

胰岛素原在粗糙型内质网中合成。

We are now looking at the ER, or endoplasmic reticulum.

我们现正研究对雌激素受体，或内质网。