英语语法分析

The extraction process of nucleoprotein and protamine from freshwater fish spermary was studied.

研究淡水鱼精巢中的核蛋白和鱼精蛋白的提取工艺。

Objective: To study the expression of the mammalian P1 protamine gene in rat and mouse.

目的：研究哺乳动物P 1精蛋白基因在大鼠和小鼠中的表达。

While protamine inhibit or kill bacteria, bacteria are induced a variety of mechanisms to resist it.

在鱼精蛋白抑制细菌的同时，细菌也产生多种机制对抗鱼精蛋白。