Question
Biology Question on human health and disease
In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self-cells, then it leads to
A
Graft rejection
B
Auto-immune disease
C
Active immunity
D
Allergic response
Answer
Auto-immune disease
Explanation
Solution
The correct option is B) Auto-immune disease.
Autoimmunity is a disorder of the defence mechanism of the body. In it, an immune response is elicited against the body's own tissues, which are thereby damaged or destroyed. Autoimmunity may be caused due to genetic or environmental factors. If self and non–self-recognition power is lost then immune cells can attack our own body cells leading to autoimmune disease.
- Common symptoms include low-grade fever and feels tired.
- So, the correct answer is 'Autoimmune disease'.