Doesn't respond as well to killed vaccines, and that's why the Salk vaccine has to be injected at a high dose.

但却对灭活的疫苗没有那样强烈反应,这也是索尔克氏疫苗为何,必须大剂量注射的原因

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That is, mix it with things which make it more make your immune system respond more strongly.

也就是说,增大剂量以使,你的免疫系统产生强烈的反应

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