Role of the camp response element site in mediating repression by the upstream regulatory region .
role of the camp response element site in mediating repression by the upstream regulatory region .
O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O