tokens: A serum-independent HL60 cell line was induced towards the neutrophil lineage by treatment with all-trans retinoic acid ( ATRA ) for 24 h .
folded_tokens: a serum-independent hl60 cell line was induced towards the neutrophil lineage by treatment with all-trans retinoic acid ( atra ) for 24 h .
labels: O B-cell_line B-cell_line I-cell_line I-cell_line O O O O O O O O O B-other_organic_compound I-other_organic_compound I-other_organic_compound O B-other_organic_compound O O O O O