These data suggest that IL-4 promoter activity is normally down-regulated by an NRE via repression of the enhancer positive regulatory element .
these data suggest that il-4 promoter activity is normally down-regulated by an nre via repression of the enhancer positive regulatory element .
O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-DNA_domain_or_region O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O