Reporter constructs spanning portions of the promoter identified a region between -85 and -200 that produced high levels of reporter gene activity in lymphoid cells .
reporter constructs spanning portions of the promoter identified a region between -85 and -200 that produced high levels of reporter gene activity in lymphoid cells .
O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O B-cell_type I-cell_type O