Autoimmune diseases are illnesses resulting from:
A)the inability of the immune system to fight off harmful substances in the body.
B)the degeneration of the immune system.
C)the production of too many antibodies when fighting off an outside infection.
D)the body attacking substances and tissues that are normally present in the body.

Question

Quizplus · Accepted Answer

Autoimmune diseases occur when the immune system mistakenly attacks the body's own healthy cells and tissues, perceiving them as threats.

Autoimmune Diseases Are Illnesses Resulting From