It takes a month for the body to make antibodies to a newly encountered pathogen, so a bunch of immune-system cells called B lymphocytes first fire back in a general way.

新的病原体进入机体后，机体一般需要一个月的时间才能产生相应的抗体，因此首先由免疫细胞——B淋巴细胞通过共同途径对病原体进行攻击。

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When antibodies encounter the pathogen, they bind to it, rendering it incapable of causing further harm.

抗体遇到病原体后能与之结合，使其无法进一步危害机体。

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Ensuing vaccines were nothing more than a dead or weakened strain of a pathogen such as polio, mumps or measles that trains the body to generate protective antibodies.

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