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': 'Mixed lymphocyte culture is used to indentify ? \nSelect and explain. \nA. MHC class I antigen, B. MHC class II antigen, C. B lymphocytes, D. T helper cells', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., MHC class II antigen Mixed lymphocyte culture is used to identify HLA H", 'role': 'assistant'}]