tokens: Our findings suggest that distinct regulatory elements , acting somewhat independently of each other , control expression of collagenase-1 .
folded_tokens: our findings suggest that distinct regulatory elements , acting somewhat independently of each other , control expression of collagenase-1 .
labels: O O O O O B-DNA_family_or_group I-DNA_family_or_group O O O O O O O O O O O B-protein_molecule O