tokens: Using electrophoretic mobility shift assays and specific antibodies , we showed that CREB-1 binds specifically to the -79 to -52 region of the CD4 promoter .
folded_tokens: using electrophoretic mobility shift assays and specific antibodies , we showed that creb-1 binds specifically to the -79 to -52 region of the cd4 promoter .
labels: O B-other_name I-other_name I-other_name I-other_name O O O O O O O B-protein_molecule 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 O B-DNA_domain_or_region I-DNA_domain_or_region O