tokens: Aclacinomycin ( ACLA ) and doxorubicin ( DOX ) were used at subtoxic concentrations to induce erythroid differentiation in the human leukemic cell line K562 .
folded_tokens: aclacinomycin ( acla ) and doxorubicin ( dox ) were used at subtoxic concentrations to induce erythroid differentiation in the human leukemic cell line k562 .
labels: B-other_artificial_source O B-other_artificial_source O O B-other_artificial_source O B-other_artificial_source O O O O B-other_name I-other_name O O B-other_name I-other_name O O B-cell_line I-cell_line I-cell_line I-cell_line I-cell_line O