2. Autoimmunity
•Any foreign substance that enters inside the body is known
antigen
•When the antigen of body that changes its position from its origin
and that enters to the other parts of body then the body recognise
its as non-self and the immune response is generated and the
formtion of autoantibody takes place such types of immunity is
known as autoimmunity .
•The diease caused by this autoimmunity in known as autoimmune
disease
3. Autoimmune disease
A disease in which the body's immune system attacks healthy cells.
A chronic inflammatory disorder affecting many joints, including those in the hands and
feet.
Rheumatoid arthritis