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
Cyclosporin–A acts on 
Select and explain. 
A. CD4 cells, B. CD3 cells, C. CD8 cells, D. B lymphocytes
A: CD4 cells
Answer: A: CD4 cells 
Explanation: None