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
CD-95 is a marker of? 
Select and explain. 
A. Death receptor, B. Tumor cells in T-ALL, C. Monocytes, D. NK cells
A: Death receptor
Answer: A: Death receptor 
Explanation: CD-95 is a marker of death receptor. It is involved in extrinsic pathway of apoptosis.