Their retinoidal activity were examined in terms of the differentiation-inducing ability toward human promyelocytic leukemia HL-60 cells .
their retinoidal activity were examined in terms of the differentiation-inducing ability toward human promyelocytic leukemia hl-60 cells .
O O O O O O O O O O O O B-cell_line I-cell_line I-cell_line I-cell_line I-cell_line O