tokens: Human immunodeficiency virus type-1 ( HIV-1 ) transcription is dependent on the interaction of host-cell transcription factors with cis-regulatory DNA elements within the viral long terminal repeat ( LTR ) .
folded_tokens: human immunodeficiency virus type-1 ( hiv-1 ) transcription is dependent on the interaction of host-cell transcription factors with cis-regulatory dna elements within the viral long terminal repeat ( ltr ) .
labels: B-virus I-virus I-virus I-virus O B-virus O O O O O O O O B-protein_family_or_group B-protein_family_or_group I-protein_family_or_group O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O