Last , we have identified two open reading frames ( ORFs ) of HHV-6 , U86 and U89 from the immediate-early locus A , that can transactivate the CD4 promoter in HeLa cells .
last , we have identified two open reading frames ( orfs ) of hhv-6 , u86 and u89 from the immediate-early locus a , that can transactivate the cd4 promoter in hela cells .
O O O O O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O B-DNA_family_or_group O O B-virus O B-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O B-cell_line I-cell_line O