Question

Give details of two main immune deficiency disorders.​

Answer 1

Two immune deficiency disorders are:-

(i) S.C.I.D. or Severe Combined Immuno Deficiency:- This disorder is due to gene mutation, involving deficiency of enzyme adenosine deaminase. This enzyme involved in maturation of T and B lymphocytes and affected individual dies at an early age.

Treatment: Gene therapy

(ii) A.I.D.S. or Acquired immuno deficiency syndrome:- HIV attacks on T-helper cells. This cause the decrease count of T-helper cell from normal 900 x 10^6/litre to less than 200 x 10^6/litre.