This enhancer in HIV-1 is the T-cell activation response element ; in HIV-2 , however , it is the second enhancer that is mainly responsible for activation in response to T-cell activators .
this enhancer in hiv-1 is the t-cell activation response element ; in hiv-2 , however , it is the second enhancer that is mainly responsible for activation in response to t-cell activators .
O B-DNA_domain_or_region O B-virus O O B-other_name I-other_name O O O O B-virus O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O B-other_name I-other_name O