What is the primary purpose of the immune system?

Answer

To distinguish between “self”—the body’s own healthy cells—and “non-self.”

The immune system's fundamental design is to act as a protector by differentiating between the body's healthy cells ('self') and foreign invaders or abnormal cells ('non-self').

What is the primary purpose of the immune system?
Geneticsdiseasecauseimmune systemautoimmunity