Furthermore , expression of OBF-1 in HeLa cells selectively stimulates the activity of a natural immunoglobulin promoter in an octamer site -dependent manner .
furthermore , expression of obf-1 in hela cells selectively stimulates the activity of a natural immunoglobulin promoter in an octamer site -dependent manner .
O O O O B-protein_molecule O B-cell_line I-cell_line O O O O O 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