How does our immune system remember the viruses or bacterias it has seen before?

Question

Are the special white cells “stored” somewhere in our body?

In: Biology

Answer 1

To elaborate on the other answers, when a B or T-cell matures into its final form, special genes for their *receptors* mutate dramatically. These receptors are what *recieve,* or recognize, the bacteria/virus parts and active them for killing. These memory cells carry each new gene that encodes for each specific receptor against each specific baddie in your body.