tokens: Using a gel mobility shift assay , we identified a DNA-binding complex in IM-9 nuclear extracts that by several criteria appears to be the Ah receptor .
folded_tokens: using a gel mobility shift assay , we identified a dna-binding complex in im-9 nuclear extracts that by several criteria appears to be the ah receptor .
labels: O O B-other_name I-other_name I-other_name I-other_name O O O O B-protein_complex I-protein_complex O B-cell_component I-cell_component I-cell_component O O O O O O O O B-protein_molecule I-protein_molecule O