epstein-barr virus ( ebv ) is unique among the dna tumour viruses by virtue of its association with two human malignancies , burkitt 's lymphoma and nasopharyngeal carcinoma ( npc ) , the former a tumour of b lymphocytes and the latter encompassing low-differentiated epithelial cells of the nasopharynx .
C2931822
nasopharyngeal
C0027442
nasopharynx