Specificity:Recognizes EBV-positive lymphoblastoid cell lines and EBV infected B cell immunoblasts in infectious mononucleosis. Also reacts with 25-50% of EBV-associated undifferentiated nasopharyngeal carcinomas and with Reed Sternberg cells in ~90% of EBV-associated Hodgkin’s disease cases. The cocktail recognizes distinct epitopes on the hydrophilic carboxyl region of LMP which is exposed to the cytosol. Reacts with EBV-positive cells.