tokens: We have recently shown that infection of Epstein-Barr virus ( EBV ) genome-positive B cells by human herpesvirus 6 ( HHV-6 ) results in the expression of the immediate-early EBV Zebra gene , followed by virus replication ( L . Flamand , I . Stefanescu , D . V . Ablashi , and J . Menezes , J . Virol . 67 : 6768-6777 , 1993 ) .
folded_tokens: we have recently shown that infection of epstein-barr virus ( ebv ) genome-positive b cells by human herpesvirus 6 ( hhv-6 ) results in the expression of the immediate-early ebv zebra gene , followed by virus replication ( l . flamand , i . stefanescu , d . v . ablashi , and j . menezes , j . virol . 67 : 6768-6777 , 1993 ) .
labels: O O O O O B-other_name O B-virus I-virus O B-virus O O B-cell_type I-cell_type O B-virus I-virus I-virus O B-virus O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O B-other_name I-other_name O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O