And we don't want this. We don't want to cause a condition known as autoimmunity. And so what happens in the thiamine? We eliminate those T cells, these immunologically, insufficient T cells, by the process of apatosis. So we see that apatosis is a normal process that takes place in development of the organ systems and the structures of our body. Now, reason number two is basically to prevent from that cell harming other cells of our body.