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
[{'content': 'CD-95 is a marker of? \nSelect and explain. \nA. Death receptor, B. Tumor cells in T-ALL, C. Monocytes, D. NK cells', 'role': 'user'}, {'content': 'Answer: A \nExplanation: CD-95 is a marker of death receptor. It is involved in extrinsic pathway of apoptosis.', 'role': 'assistant'}]