tokens: Electrophoretic mobility shift analyses demonstrated that the 151-bp region contains nuclear protein binding sites for Sp1 , PU . 1 , and/or Elf-1 , and a novel factor .
folded_tokens: electrophoretic mobility shift analyses demonstrated that the 151-bp region contains nuclear protein binding sites for sp1 , pu . 1 , and/or elf-1 , and a novel factor .
labels: B-other_name I-other_name I-other_name I-other_name O O O B-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-protein_molecule O B-protein_molecule I-protein_molecule I-protein_molecule O O B-protein_molecule O O O B-protein_family_or_group I-protein_family_or_group O