tokens: Differentiation of U-937 promonocytic cells by etoposide and ICRF-193 , two antitumour DNA topoisomerase II inhibitors with different mechanisms of action .
folded_tokens: differentiation of u-937 promonocytic cells by etoposide and icrf-193 , two antitumour dna topoisomerase ii inhibitors with different mechanisms of action .
labels: B-other_name O B-cell_line I-cell_line I-cell_line O B-other_organic_compound O B-other_organic_compound O O B-other_organic_compound B-protein_molecule I-protein_molecule I-protein_molecule O O O O O O O