This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Attachment of Ebstein Barr virus in nasopharynx is mediated through: 
Select and explain. 
A. CD 4, B. CD 3, C. CD 8, D. CD 21
D: CD 21
Answer: D: CD 21 
Explanation: Ans. D. CD 21Attachment of Ebstein Barr virus in nasopharynx is mediated through CD 21 or CR 2 on B lymphocytes. This is also a receptor for C3b.