tokens: In particular , one class of helix-loop-helix proteins , termed E-proteins , have been implicated in the regulation of gene expression during B-cell development .
folded_tokens: in particular , one class of helix-loop-helix proteins , termed e-proteins , have been implicated in the regulation of gene expression during b-cell development .
labels: O O O O O O B-protein_family_or_group I-protein_family_or_group O O B-protein_family_or_group O O O O O O O O B-other_name I-other_name O B-other_name I-other_name O