类毒素经过处理后已消除其毒素特性的一种物质，但仍保留有激发产生抗毒素的能力，用于免疫中。

A substance that HAS been treated to destroy its toxic properties but retains the capacity to stimulate production of antitoxins, used in immunization.

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但是当化学物质在你的皮肤上的使用，它们被吸收直接进入你的血液流，没有任何形式的过滤，也没有对抗毒素的保护。

But when chemicals are applied on your skin, they are absorbed straight into your blood stream without filtering of any kind, and no protection against the toxin.

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科学家希望对进化关系的研究能有助于抗毒素和蜇伤治疗方面的进展。

Scientists hope that studying the evolutionary relationships will help in the development of antivenoms and treatments for stings.

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