In addition to the already identified NIP repressor site , evidence is presented for a second repressor region that restricts promoter activity in fibroblasts .
in addition to the already identified nip repressor site , evidence is presented for a second repressor region that restricts promoter activity in fibroblasts .
O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-cell_type O