Hence , we propose that a necessary prerequisite of enhancer activity is the B-cell-specific displacement of a ZEB -like repressor by bHLH proteins .
hence , we propose that a necessary prerequisite of enhancer activity is the b-cell-specific displacement of a zeb -like repressor by bhlh proteins .
O O O O O O O O O B-DNA_domain_or_region O O O B-other_name I-other_name O O B-protein_molecule O O O B-protein_family_or_group I-protein_family_or_group O