In higher vertebrates they have ability to differentiate foreign organisms from self cells, sometimes due to genetic abnormalities the body attacks self-cells , what will it leads ?
Answer & explanation
Correct answer: option 2
Sometimes, due to genetic and
other unknown reasons, the body attacks self-cells. This results in damage
to the body and is called auto-immune disease. Rheumatoid arthritis
which affects many people in our society is an auto-immune disease.