The negative regulatory element ( NRE ) of the hepatitis B virus ( HBV ) core promoter contains three subregions which act synergistically to suppress core promoter activity .
the negative regulatory element ( nre ) of the hepatitis b virus ( hbv ) core promoter contains three subregions which act synergistically to suppress core promoter activity .
O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O O B-virus I-virus I-virus O B-virus O O O O O O O O O O O O B-other_name I-other_name O