tokens: Quantitative experiments comparing binding of these transcription factors to the IL-2 promoter are currently under investigation .
folded_tokens: quantitative experiments comparing binding of these transcription factors to the il-2 promoter are currently under investigation .
labels: O O O O O O B-protein_family_or_group I-protein_family_or_group O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O