However , upon stable integration into chromatin , deletion of this region causes a nearly 90% decrease in promoter activity compared with expression from an alpha-globin promoter retaining this region .
however , upon stable integration into chromatin , deletion of this region causes a nearly 90% decrease in promoter activity compared with expression from an alpha-globin promoter retaining this region .
O O O O O O B-DNA_family_or_group O O O O O O O O O O O B-other_name I-other_name O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O