tokens: Nuclear factor-kappa B ( NF-kappa B ) plays a broad role in gene regulation , but it is not evident whether NF-kappa B acts as a messenger system for germline C epsilon transcription .
folded_tokens: nuclear factor-kappa b ( nf-kappa b ) plays a broad role in gene regulation , but it is not evident whether nf-kappa b acts as a messenger system for germline c epsilon transcription .
labels: B-protein_complex I-protein_complex I-protein_complex O B-protein_complex I-protein_complex O O O O O O O O O O O O O O O B-protein_complex I-protein_complex O O O O O O B-DNA_domain_or_region O O O O