Consistent with these differences , we have previously demonstrated that the enhancer/promoter region of HIV-2 functions quite differently from that of HIV-1 .
consistent with these differences , we have previously demonstrated that the enhancer/promoter region of hiv-2 functions quite differently from that of hiv-1 .
O O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O B-virus O O O O O O B-virus O