tokens: The N element could independently mediate low levels of transcription in both B-cell and HeLa-cell extracts , and , in conjunction with the octamer element , it can promote high levels of transcription in B-cell extracts .
folded_tokens: the n element could independently mediate low levels of transcription in both b-cell and hela-cell extracts , and , in conjunction with the octamer element , it can promote high levels of transcription in b-cell extracts .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O O O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O B-other_name I-other_name O