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': 'EBV enters B-cells through? \nSelect and explain. \nA. CD-1, B. CD-2, C. CD-21, D. CD-19', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., CD-21 The virus enter the pharyngeal epithelial cells and B cells through (CR 2 / or CD21) receptors.", 'role': 'assistant'}]