(En español: Autoinmunidad) Your immune system fights infections
and illnesses. It prevents you from getting sick, or, if you do,
it helps you get better. It's called the immune system because
it's not just one body part. It's a system of different organs,
cells, and proteins known as antibodies. Together, they
identify, attack, and destroy germs and other foreign
substances. But sometimes the immune system makes a mistake and
attacks part of the body. This is called autoimmunity. One
example of an autoimmune disease is type 1 diabetes, in which
the immune system destroys the cells in the pancreas that
produce insulin.