tokens: However , it remains unclear how this viral protein induces a persistent rather than transient NF-kappaB response .
folded_tokens: however , it remains unclear how this viral protein induces a persistent rather than transient nf-kappab response .
labels: O O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O O B-other_name B-protein_complex O O