During Epstein-Barr virus latent infection of B lymphocytes in vitro , six viral nuclear antigens ( EBNAs ) are expressed from one of two promoters , Cp or Wp , whose activities are mutually exclusive .
during epstein-barr virus latent infection of b lymphocytes in vitro , six viral nuclear antigens ( ebnas ) are expressed from one of two promoters , cp or wp , whose activities are mutually exclusive .
O B-virus I-virus O O O B-cell_type I-cell_type O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O B-protein_family_or_group O O O O O O O B-DNA_domain_or_region O B-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O O