英语语法分析

Diphtheria antitoxin is a foreign protein.

白喉抗毒素是异性蛋白。

But causes in blood serum's antitoxin level to elevate.

而使血清中的抗毒素水平升高。

Objective: Probe into ways of dispensing the skin test of antitoxin.

目的：探讨破伤风皮试液的配制方法。