tokens: Electrophoretic mobility shift assays indicate that MS-2beta and MS-2gamma interact with nuclear factors that are induced during U937 differentiation .
folded_tokens: electrophoretic mobility shift assays indicate that ms-2beta and ms-2gamma interact with nuclear factors that are induced during u937 differentiation .
labels: B-other_name I-other_name I-other_name I-other_name O O B-protein_molecule O B-protein_molecule O O B-protein_molecule I-protein_molecule O O O O B-cell_line O O