tokens: In addition , BSAP was found to be the only abundant DNA-binding activity of B-cell nuclear extracts that interacts with the CD19 promoter .
folded_tokens: in addition , bsap was found to be the only abundant dna-binding activity of b-cell nuclear extracts that interacts with the cd19 promoter .
labels: O O O B-protein_molecule O O O O O O O B-other_name I-other_name O B-cell_component I-cell_component I-cell_component O O O O B-DNA_domain_or_region I-DNA_domain_or_region O