In gene transfection assays , the effect of TNFalpha requires the presence of an inducible nuclear factor-kappaB ( NF-kappaB ) ( Rel A ) binding site in the IL-8 promoter .
in gene transfection assays , the effect of tnfalpha requires the presence of an inducible nuclear factor-kappab ( nf-kappab ) ( rel a ) binding site in the il-8 promoter .
O O O O O O O O B-protein_molecule 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 B-protein_complex O O B-protein_subunit I-protein_subunit O O O O O B-protein_molecule O O