tokens: The suggested roles of the downstream 3' regions acting as a Locus Control Region ( LCR ) , have allowed comparisons to be made between the regulation of the IgH locus with other model systems whose gene expression is governed by LCR activity .
folded_tokens: the suggested roles of the downstream 3' regions acting as a locus control region ( lcr ) , have allowed comparisons to be made between the regulation of the igh locus with other model systems whose gene expression is governed by lcr activity .
labels: O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region 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 B-other_name I-other_name O O O B-DNA_domain_or_region O O