or stimulates the production of cytotoxic T-cells

要么刺激T细胞释放细胞毒素
that can kill infected cells within your body.

杀死身体里被感染的细胞
But in any event, the vaccine is intended to

但无论如何疫苗是通过
stimulate the immune system to produce an effector response—

刺激免疫系统来使身体产生应答
either antibodies or specific cells—

无论是抗体还是特定的细胞
that can combat spread of the microorganism through your body.

都可以阻止微生物在体内扩散
Usually it's done by taking all or part of the infectious agent,

通常它会带着全部或部分抗原介质
and showing them to your immune system in some way.

并以某种方式呈递给你的免疫系统
And so we talked very briefly last time about

上次我们简单的提到过
this business of antigen presentation,

有关抗原呈递的一些知识
how your immune system--

你的免疫系统如何
one of the things that it does especially well,

这也是免疫系统尤其擅长的一点