Question

In higher vertebrates the immune system can distinguish self cells from nonself ones.If this property is lost due to genetic abnormality and it attacks self cells , it leads to

• A. Active immunity
• B. Allergic response
• C. Graft rejection
• D. Auto immune disease

Answer 1

The correct option is D Auto immune disease

An autoimmune disease is a condition arising from an abnormal immune response to normal body tissue. In an autoimmune disease, the immune system fails to recognize self-cells and produces antibodies against self-cells. Common symptoms include low-grade fever and feeling tired. Autoimmune disease is due to genetic abnormality or other environmental factors.

So, the correct answer is 'Autoimmune disease'.