A disease that occurs when the immune system is sensitized to a protein present in the body and attacks the tissue that contains this protein is called a(n) __________ disease.

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Autoimmune diseases occur when the immune system mistakenly attacks the body's own tissues, recognizing them as foreign. This happens because the immune system is sensitized to a protein present in the body's own cells.

A Disease That Occurs When the Immune System Is Sensitized