An autoimmune disease is one in which the body's own immune system attacks healthy cells. (fullhealthsecrets.com)
It's believed to play a role in the prevention of cancer and disorders that are caused by the body's own immune system attacking itself. (verywellfamily.com)
In the syndrome, the body's immune system attacks part of the nervous system and is characterized by muscle weakness and paralysis, which can be permanent. (lawyer-monthly.com)