This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Mode of action of azathioprine ? 
Select and explain. 
A. | IL-2, B. T-cell blockade, C. Decreased lymphophagocytic activity, D. Wide-spread antitumor activity
B: T-cell blockade
Answer: B: T-cell blockade 
Explanation: Ans. is 'b' i.e., T-cell blockade