A bacterium inside you can multiple and mutate over generations in the time it takes for you to finish a cup of warm tea for that sore throat.

So how do you counter a weapon that itself adapts multiple times?

That's where our Adaptive Immune System comes in.

It has a weapon for every single enemy that has existed, exists and will ever exist

Since your immune system creates an infinite amount of cells, it also creates cells that can kill your own cells. Your thymus is crucial for identifying identification.

Your thymus contains a sample of every possible cell in your body, and ...