Both RA and PMA effectively down-regulated c-myc expression , while c-myb expression decreased only after PMA treatment .
both ra and pma effectively down-regulated c-myc expression , while c-myb expression decreased only after pma treatment .
O B-other_organic_compound O B-other_organic_compound O O B-DNA_domain_or_region O O O B-DNA_domain_or_region O O O O B-other_organic_compound O O