tokens: In this study we demonstrate that a subfragment ( C26 ) in the region between the 21-bp elements is involved in trans-activation by p40tax , possibly through binding to an NF-kappa B -like nuclear factor or factors .
folded_tokens: in this study we demonstrate that a subfragment ( c26 ) in the region between the 21-bp elements is involved in trans-activation by p40tax , possibly through binding to an nf-kappa b -like nuclear factor or factors .
labels: O O O O O O O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O B-other_name O B-protein_molecule O O O O O O B-protein_molecule I-protein_molecule O O O O O O