Adenosine deaminasc deficiency is seen in the following -: (A) Common variable immunodeficiency, (B) Severe combined immunodeficiency, (C) Chronic granulomatous disease, (D) Nezelof syndrome
Answer is B. Robbins basic pathology 6th edition. Chapter Diseases of immunity. page no. 235. Severe Combined Immunodeficiency Diseases(SCID) is autosomal recessive , most common cause being deficiency of adenosine deaminase enzyme(ADA).