Source: cirosantilli/immune-system
= Immune system
{wiki}
A cool thought: <bacteria> like <E. Coli> replicate every 20 minutes. A human replicates every 15 years. So how can <multicellular> beings possibly cope with the speed of evolution of parasites?
The answer is that within us, the <adaptative immune system> is a population of cells that <evolves> very quickly. So in a sense, within our bodies there is fast cell-level non-inheritable evolution happening daily!