tokens: A R-PK DNA fragment extending from -870 to +54 relative to the cap site confers erythroid specificity to a reporter gene .
folded_tokens: a r-pk dna fragment extending from -870 to +54 relative to the cap site confers erythroid specificity to a reporter gene .
labels: O B-DNA_molecule I-DNA_molecule I-DNA_molecule O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-DNA_family_or_group I-DNA_family_or_group O