What happens in an autoimmune disease? An allergen destroys the body organs to cause a disease. A foreign body starts to

Question

What happens in an autoimmune disease?
 An allergen destroys the body organs to cause a disease.
 A foreign body starts to destroy the cells of the immune system.
The body's immune system starts attacking some cells of
the body, who turned into self-antigens.
The immune system starts attacking all the cells of the body.

Kunduz · Accepted Answer

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