However , mutation of the PU box had no effect in the T-cell line Jurkat , where none of the Spi-1 family members is expressed .
however , mutation of the pu box had no effect in the t-cell line jurkat , where none of the spi-1 family members is expressed .
O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-cell_line I-cell_line I-cell_line O O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O