Congratulations, you made it half way through the book. By now we trust you are beginning to look at autoimmune disorders in a different light.
You're learning that the immune system 'turns on' to antigens but antigens try to elude the immune attack. In doing so, antigens can hide inside cells and eventually, the B cell response can make antibodies to self-tissue.
This IS what an autoimmune disease is all about!
Download Section 4 HERE