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: Pathology
Macrophages are conveed to epitheloid cells by which cytokine - 
Select and explain. 
A. 1L-2, B. IFN-y, C. TNF-a, D. TGF-f3
B: IFN-y
Answer: B: IFN-y 
Explanation: Ans. is 'b' i.e., IFN-y