Furthermore, NPC also shows various limited expression patterns of EBV lytic genes, which account for an incomplete process of virion production [11, 65], and no viral particles can be detected in tumor tissues, despite the expression of lytic gene products and the increased titers of anti-lytic antigen IgA antibodies [9, 10, 12, 68]. The gene discussed is CD79A; the disease is nasopharyngeal carcinoma.