Induction of Apoptosis in Human Leukemic Cell Lines U937, K562 and HL-60 by Litchi chinensis Leaf Extract Via Activation of Mitochondria Mediated Caspase Cascades

Fig. (4) Fluorescence microscopic images of untreated control U937 (A), K562 (C), HL-60 (E) cells and LCLE treated U937 (B), K562 (D) HL-60 (F) cells. The LCLE treated cells showed green fluorescent rings of externalized phosphatidylserine indicating sign of apoptosis after 24 h. of treatment.