Figure 2From: Induction of mitochondrial dependent apoptosis and cell cycle arrest in human promyelocytic leukemia HL-60 cells by an extract from Dorstenia psilurus: a spice from Cameroon Effect of DP extract on nuclear morphological changes of HL-60 cells after 24 h and observation under fluorescence microscope (Olympus, Tokoy, Japan; magnification · 200). (A): control; (B): Camptotecin (2 μM); (C): 20 μg/ml; (D): 50 μg/ml; (E): 100 μg/ml. Back to article page