In Epstein-Barr virus ( EBV ) -associated tumors in nonimmunocompromised patients , EBV gene expression is highly restricted .
in epstein-barr virus ( ebv ) -associated tumors in nonimmunocompromised patients , ebv gene expression is highly restricted .
O B-virus I-virus O O O O O O B-multi_cell I-multi_cell O B-other_name I-other_name I-other_name O O O O