Cell-specific expression of helix-loop-helix transcription factors encoded by the E2A gene .
cell-specific expression of helix-loop-helix transcription factors encoded by the e2a gene .
B-other_name I-other_name O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O B-DNA_domain_or_region I-DNA_domain_or_region O