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': "Which of following antigen cell does not express MHC Class II - molecules - \nSelect and explain. \nA. Follicular cells thyroid, B. Microglia of brain, C. Langerhan's cells of skin, D. Dendritic cell of Lymphoid cells", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Follicular cells thyroid", 'role': 'assistant'}]