tokens: Human U-937 leukemia cells differentiate along the monocytic lineage following 3-day exposures to 12-O-tetradecanoylphorbol-13-acetate ( TPA ) .
folded_tokens: human u-937 leukemia cells differentiate along the monocytic lineage following 3-day exposures to 12-o-tetradecanoylphorbol-13-acetate ( tpa ) .
labels: B-cell_line I-cell_line I-cell_line I-cell_line O O O B-cell_type I-cell_type O O O O B-other_organic_compound O B-other_organic_compound O O