tokens: The locus control region of the beta-globin cluster contains five DNase I hypersensitive sites ( 5'HS1-5 ) required for locus activation .
folded_tokens: the locus control region of the beta-globin cluster contains five dnase i hypersensitive sites ( 5'hs1-5 ) required for locus activation .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_family_or_group I-DNA_family_or_group O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O O B-other_name I-other_name O