tokens: The long terminal repeat ( LTR ) region of HIV proviral DNA contains binding sites for nuclear factor kappa B ( NF-kappa B ) , and this transcriptional activator appears to regulate HIV activation .
folded_tokens: the long terminal repeat ( ltr ) region of hiv proviral dna contains binding sites for nuclear factor kappa b ( nf-kappa b ) , and this transcriptional activator appears to regulate hiv activation .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-virus O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule I-protein_molecule O O O O B-protein_family_or_group I-protein_family_or_group O O O B-virus O O