You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is CD21 receptors bind to which virus - and explain in detail?
Ans. is 'b' i.e., EBV * EBV belongs to Herpes virus family.* Infection is most common in early childhood, with a second peak during late adolescence.* Infectious mononucleosis (IM) is usually a disease of young adults.* EBV is transmitted by saliva (oral secretions) of infected person.* Intimate oral contact, as in kissing is the predominant mode of transmission - causes kissing disease.* The virus enter the pharyngeal epithelial cells and B cells through (CR2 / or CD21) receptors.* Memory B Cells are the reservoir of EBV.