tokens: The functions of basic helix-loop-helix ( bHLH ) transcription factors in activating differentiation-linked gene expression and in inducing G1 cell cycle arrest are negatively regulated by members of the Id family of HLH proteins .
folded_tokens: the functions of basic helix-loop-helix ( bhlh ) transcription factors in activating differentiation-linked gene expression and in inducing g1 cell cycle arrest are negatively regulated by members of the id family of hlh proteins .
labels: O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group B-protein_family_or_group I-protein_family_or_group O O B-other_name I-other_name I-other_name O O O B-other_name I-other_name I-other_name I-other_name O O O O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O