This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunomodulatory: DMARDS, Monoclonal Antibodies, Subject name: Pharmacology
All of the following drugs are used as immuno-suppressants except. 
Select and explain. 
A. Glucocorticoids, B. Cyclosporine, C. Cephalosporin, D. Azathioprine
C: Cephalosporin
Answer: C: Cephalosporin 
Explanation: Ans. (C) Cephalosporin(Ref: Principles of Pharmacology, 1/e p912; KDT 8/e p937)Cephalosporins are b-lactam antibiotics whereas other drugs are immunosuppressants.