that response is specific to that particular antigen.

免疫应答是针对特定的抗原
It's not just that your whole immune system gets revved up

并不是整个免疫系统都得以加强
and it's going to respond

免疫应答会对
more rapidly to any antigen it's exposed to.

以前接触过的抗原做出的应答更加迅速
If we did the experiment where on this booster we included

如果实验中我们使用的后续疫苗
not only the initial antigen but some unrelated antigen,

不仅包括原抗原还包括一些无关抗原
the response to the unrelated antigen called B here,

这里将对无关抗原的应答称为B
looks like a primary response.

该应答就如同初次免疫一样
There's a lag phase,

会有迟滞期
there's a slow rise to an intermediate level of antibody.

在该时期抗体浓度缓慢到达中间水平
So, every time you're exposed to a new vaccine or a new antigen

所以每当你接触到新疫苗或是新抗原
you go through this primary response

在再次免疫之前