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 .
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 .
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