This factor is present in an active form in a variety of cell types but is apparently unable to bind to the endogenous Ig heavy chain enhancer in non-B cells , perhaps due to a non-permissive chromatin structure of the Ig heavy chain locus .
this factor is present in an active form in a variety of cell types but is apparently unable to bind to the endogenous ig heavy chain enhancer in non-b cells , perhaps due to a non-permissive chromatin structure of the ig heavy chain locus .
O O O O O O O O O O O O O O O O O O O O O O B-DNA_domain_or_region B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-cell_type I-cell_type O O O O O B-other_name B-DNA_family_or_group O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O