Nuclear appearance of a factor that binds the CD28 response element within the interleukin-2 enhancer correlates with interleukin-2 production .
nuclear appearance of a factor that binds the cd28 response element within the interleukin-2 enhancer correlates with interleukin-2 production .
O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-protein_molecule O O