Previous studies found that P1 , an element of the interleukin 4 ( IL-4 ) promoter that binds AP-1 , is important for Th2-restricted IL-4 expression .
previous studies found that p1 , an element of the interleukin 4 ( il-4 ) promoter that binds ap-1 , is important for th2-restricted il-4 expression .
O O O O B-DNA_domain_or_region O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region B-protein_molecule O O O O O O O O O O B-protein_molecule O O