来自《耶鲁大学开放课程：生物医学工程探索 第9集 第9集》

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  We're going to talk about how they're prepared,
  我们会讲它们是如何做准备的
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  but it's a preparation that is intended to stimulate your immune system.
  它通过刺激你的免疫系统来进行准备
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  So, what that really means,
  所以 这就意味着
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  you know, from last week's lecture,
  通过上周的课程 你们知道
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  is that the vaccine stimulates these particular cells
  疫苗通过刺激免疫系统中的
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  in your immune system to give you immunity.
  特定细胞来使人获得免疫力
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  We're usually talking about adaptive immunity here.
  这就是我们经常说的获得性免疫
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  So, either stimulates the production of--
  所以 疫苗的刺激要么能够
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  and differentiation of B-cells,
  促进B淋巴细胞产生和分化
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  to produce a specific antibody that can neutralize the virus,
  以生成特定的抗体来杀灭病毒
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  or stimulates the production of cytotoxic T-cells
  要么刺激T细胞释放细胞毒素
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  that can kill infected cells within your body.
  杀死身体里被感染的细胞