tokens: Interestingly , alteration of either the microB or E3 site in a 70-base-pair fragment of the IgH enhancer that lacks the binding site for OCTA abolished enhancer activity in lymphoid cells completely .
folded_tokens: interestingly , alteration of either the microb or e3 site in a 70-base-pair fragment of the igh enhancer that lacks the binding site for octa abolished enhancer activity in lymphoid cells completely .
labels: O O O O O O B-DNA_domain_or_region O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-other_name I-other_name I-other_name I-other_name O B-cell_type I-cell_type O O