tokens: To identify osteoblast-specific cis-acting elements and trans-acting factors , we initiated an analysis of the promoter of a mouse osteocalcin gene , an osteoblast-specific gene .
folded_tokens: to identify osteoblast-specific cis-acting elements and trans-acting factors , we initiated an analysis of the promoter of a mouse osteocalcin gene , an osteoblast-specific gene .
labels: O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-protein_family_or_group I-protein_family_or_group O O O O O O O B-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_family_or_group I-DNA_family_or_group O