Why does our immune system have a T-Cell for every Bacteria, Virus, Etc,

Question

Why does our immune system have a T-Cell for every Bacteria, Virus, Etc,

In: Biology

Answer 1

There’s two ways a T Cell learn, basically

Development:
When a T cell is growing it’s exposed to millions of variations of antigens (puzzle pieces) and, as long as the antigen isn’t “self antigen” (self recognizing) it will continue to grow. When it learns the antigen or puzzle piece, it will specifically bind to it, whenever it enters the body

Acquired:
A naive T cell can be presented an antigen / puzzle piece by “antigen presenting cells” or other immune helper cells. Then the T Cell will turn into a killer and seek out any matches