tokens: Cell-to-cell contact activates in vitro binding of the nuclear factor kappaB ( NF-kappaB ) p50/p65 heterodimer to an HIV-1 kappaB oligonucleotide .
folded_tokens: cell-to-cell contact activates in vitro binding of the nuclear factor kappab ( nf-kappab ) p50/p65 heterodimer to an hiv-1 kappab oligonucleotide .
labels: B-other_name I-other_name O O O O O O B-protein_complex I-protein_complex I-protein_complex O B-protein_complex O O O O O B-polynucleotide I-polynucleotide I-polynucleotide O