<prompt> CD21 receptors bind to which virus -CMVEBVRabies virusHSV  <response>: 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. 