tokens: The first alteration involves the constitutive expression of substantial kappa B-binding activity in nuclear extracts , which was observed in the electrophoretic mobility shift assay .
folded_tokens: the first alteration involves the constitutive expression of substantial kappa b-binding activity in nuclear extracts , which was observed in the electrophoretic mobility shift assay .
labels: O O O O O O O O O B-other_name I-other_name I-other_name O B-cell_component I-cell_component O O O O O O B-other_name I-other_name I-other_name I-other_name O