Transient expression assays with plasmids containing deleted parts of the LTR region linked to a reporter gene showed that the NF-kappaB binding site was essential for HIV-1 LTR activity in CD40-stimulated B lymphocytes .
transient expression assays with plasmids containing deleted parts of the ltr region linked to a reporter gene showed that the nf-kappab binding site was essential for hiv-1 ltr activity in cd40-stimulated b lymphocytes .
O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region 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 O O B-cell_line I-cell_line I-cell_line O