Enzyme ImmunoAssay   (ELISA)  for   the   qualitative determination  of   IgM class antibodies to Epstein Barr Virus Nuclear Antigen (EBNA) in human plasma and sera.The kit is intended for the classification of the viral infective agent and the follow-up of EBV infected patients.For “in vitro” diagnostic use only.Epstein Barr Virus or EBV is the principal etiological agent of infectious mononucleosis, as well as a contributory factor in the etiology of Burkitt’s lymphoma and nasopharyngeal carcinoma, or NPC.