two variants of hl-60 promyelocytic leukemia cells ( hsc , oci ) that were indistinguishable by morphology , cell surface markers , dna histograms , and by their inability to reduce nitroblue tetrazolium , were induced to differentiate by retinoic acid ( ra ) , 12-o-tetradecanoyl-phorbol-13-acetate ( tpa ) , and by phytohemagglutinin-leucocyte conditioned medium ( pha-lcm ) .
C0023487
promyelocytic leukemia
C0040845
retinoic acid