tokens: Gel mobility shift assays demonstrated that specific DNA-protein complexes can be formed with each element , and that there are cell-specific differences in factors , which bind to the SP-1 -like element between MEL and NIH3T3 cells .
folded_tokens: gel mobility shift assays demonstrated that specific dna-protein complexes can be formed with each element , and that there are cell-specific differences in factors , which bind to the sp-1 -like element between mel and nih3t3 cells .
labels: B-other_name I-other_name I-other_name I-other_name O O O B-protein_complex I-protein_complex O O O O O O O O O O O O O O O O O O O O B-protein_molecule O O O O O O O O