Question

124. Which of the following are the reasons for
rheumatoid arthritis?
i) Less antibodies are produced in the body
ii) Body attack self cells
iii) Lymphocytes becomes inactive
iv)The ability to differentiate pathogens or foreign molecules from self cell is lost
1)1&2
2)2&3
3)2&4
4)3&4​

Answer 1

Answer3: (2&4)

Explanation:it's a condition where self immune system attacks it's own body cells . Its cause to why immune system attacks it's own body cells is still unknown.