So what's thought to happen is one of these pathogens activates the immune system by antigen presentation, meaning one of the gastrointestinal cells is like " here, I think this is an infectious molecule" , and that's fine, because it is.

我们认为这里发生的是：其中一个病原体通过抗原提呈激活了免疫系统，就像是一个胃肠道细胞在说：“看，这貌似是个感染分子！”，这种想法没有错，正是如此。

Antibodies are a class of proteins called immunoglobulins. When an antibody hooks up with an antigen, it often puts the antigen out of action by inactivating or covering a key portion of the harmful substance.

在某些情况下，通过调理作用的过程，抗体在抗原表面涂抹上一些" 奶油" ，让吞噬细胞更喜欢吞噬它们。