Objective To express the nontoxic mutant CRM197 of diphtheriatoxin and study its effect as a carrier protein.
目的表达白喉毒素无毒变异体CRM197，并考察其载体作用。
2
To protect you against small pox or diphtheria, you are vaccinated with a small amount of the toxin, and then your body develops immunity against that toxin.
为了避免你长小脓包或得白喉病，所以会给你的身体接种小量毒素，然后你的身体会针对这些毒素产生免疫力。
3
Diphtheria is. treated with an antitoxin that neutralizes the toxin and produces long-term immunity.