tokens: Isolation of a candidate repressor/activator , NF-E1 ( YY-1 , delta ) , that binds to the immunoglobulin kappa 3' enhancer and the immunoglobulin heavy-chain mu E1 site .
folded_tokens: isolation of a candidate repressor/activator , nf-e1 ( yy-1 , delta ) , that binds to the immunoglobulin kappa 3' enhancer and the immunoglobulin heavy-chain mu e1 site .
labels: O O O O B-other_name O B-protein_molecule O B-protein_molecule O B-protein_molecule O O 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 I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O