tokens: In B7 . 1 -positive B cells , this element bound several members of the NF-kappaB family , transcription factors already implicated in signal transduction pathways relevant to B7 . 1 expression .
folded_tokens: in b7 . 1 -positive b cells , this element bound several members of the nf-kappab family , transcription factors already implicated in signal transduction pathways relevant to b7 . 1 expression .
labels: O B-protein_molecule I-protein_molecule I-protein_molecule O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O B-protein_family_or_group I-protein_family_or_group O O O B-other_name I-other_name I-other_name O O B-protein_molecule I-protein_molecule I-protein_molecule O O