The Evolution of Bacteria and the Immune System

How does the immense system decide whether it's benign or potentially pathogenic? Ah, excellent question. A certain bacteria have universal markers. These markers are recognized by the innate immune system and they go into action immediately. And that trigurs then another immete response. So in a sense, they theres ay library of ommune responses to a known set of pasages. One of the devastations of influenza or epidemics is precisely the fact that they develop novel antagens which are not recognized. I see is it that these microbes are often sort of battling it out, or somehow coming to relationships within us. And our immune sister is to some extent, a bi a bystander