tokens: EBV nuclear antigen 2 ( EBNA2 ) , one of the first genes expressed after EBV infection of B-cells , is a transcriptional activator of viral and cellular genes and is essential for the transforming potential of the virus .
folded_tokens: ebv nuclear antigen 2 ( ebna2 ) , one of the first genes expressed after ebv infection of b-cells , is a transcriptional activator of viral and cellular genes and is essential for the transforming potential of the virus .
labels: B-virus O O O O B-protein_molecule O O O O O O O O O B-virus O O B-cell_type O O O O O O B-DNA_family_or_group O B-DNA_family_or_group I-DNA_family_or_group O O O O O O O O O B-virus O