<prompt> EBV is associated with.Nasopharyngeal carcinomaEsophageal cancerGastric cancerNone of the above  <response>: Epstein-Barr Virus EBVis closely associated with nasopharyngeal cancer. EB virus has two impoant antigens:Viral capsid antigenVCA andEarly antigenEA. IgA antibodies of EA are highly specific for nasopharyngeal cancer but have sensitivity of only 70-80 while IgA antibodies of VCA are more sensitive but less specific. IgA antibodies against both EA and VCA should be done for screening of patients for nasopharyngeal cancer. 