We have tested several subregions of the DR enhancer B domain , either alone or in combination , for their capacity to transmit the R-activating signal to the rabbit beta-globin promoter .
we have tested several subregions of the dr enhancer b domain , either alone or in combination , for their capacity to transmit the r-activating signal to the rabbit beta-globin promoter .
O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O O O O O B-other_name I-other_name O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O