英语语法分析

Objective: to isolate and purify murine hematopoietic stem cell using the immunomagnetic microbeads.

目的：为了建立免疫磁珠法体外分离提纯骨髓造血干细胞的方法。

We're not suggesting you abandon toothpaste altogether or stop brushing your teeth. Some brands of toothpaste, however, do contain microbeads.

我们并不是建议你扔掉所有的牙膏或者就不刷牙了，但有些品牌的牙膏里确实有小颗粒。

Microbeads are *miniscule pieces of plastic omnipresent in our everyday cosmetics that you may have never paid much attention to up until now.

微珠是一些非常小的塑料碎片，它在我们每天都用的化妆品中无处不在。 或许直到现在，你都没有注意到它的存在。