tokens: Temporal control of IgH gene expression in developing B cells by the 3' locus control region .
folded_tokens: temporal control of igh gene expression in developing b cells by the 3' locus control region .
labels: B-other_name I-other_name O B-DNA_domain_or_region I-DNA_domain_or_region O O B-cell_type I-cell_type I-cell_type O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O