Transcriptional differences between these LTRs were further enhanced by two- to threefold upon treatment of cells with phorbol ester or tumor necrosis factor alpha or by cotransfection with plasmids expressing NF kappa B subunits .
transcriptional differences between these ltrs were further enhanced by two- to threefold upon treatment of cells with phorbol ester or tumor necrosis factor alpha or by cotransfection with plasmids expressing nf kappa b subunits .
O O O O B-DNA_domain_or_region O O O O O O O O O O O O B-other_organic_compound I-other_organic_compound O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O O O O B-DNA_molecule O B-protein_molecule I-protein_molecule I-protein_molecule O O