tokens: The DQB X2-box was able to restore expression to the silent DRA reporter construct .
folded_tokens: the dqb x2-box was able to restore expression to the silent dra reporter construct .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O B-DNA_molecule I-DNA_molecule I-DNA_molecule I-DNA_molecule O