tokens: We report the identification of a T cell-specific transcription factor , TCF-1 , binding to this element .
folded_tokens: we report the identification of a t cell-specific transcription factor , tcf-1 , binding to this element .
labels: 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 O B-protein_molecule O O O O O O