英语语法分析

METHODS 9-nc liposome was prepared by film dispersion-sonication method.

方法采用薄膜-超声法制备了9 -硝基喜树碱脂质体。

Subsequently, chromatin is isolated from nuclei and subjected to sonication.

随后，染色质从细胞核中分离并进行超声打断。

The target proteins were released from the cells by sonication and further purified with GST column.

经超声波破碎菌体释放目蛋白，并用GST亲和层析进一步纯化得到目的蛋白。