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: Microbiology
[{'content': 'Cell mediated immunity is by viue of? \nSelect and explain. \nA. Helper t cells, B. Suppressor t cells, C. Cytotoxic t cells, D. All aboce', 'role': 'user'}, {'content': "Answer: D \nExplanation: All above REF: Jawetz's 24th ed chapter 8 Cell mediated immunity is effected by T cells Helper T cells, suppressor T cells, cytotoxic T cells are types of T Cells", 'role': 'assistant'}]