tokens: Specific mRNAs for c-fos and c-jun were detectable within 30 min after cell activation and reached maximal levels within 2 h .
folded_tokens: specific mrnas for c-fos and c-jun were detectable within 30 min after cell activation and reached maximal levels within 2 h .
labels: O B-RNA_family_or_group O B-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O O O O O O O O O O O