Figure 6. DNA fragmentation assay shows inhibition of apoptosis in osajin-treated NPC cells by the anti-Fas mAb ZB4.

TW04 cells were preincubated for 2 h with 500 ng/ml ZB4 mAb, and osajin (5 µM) was then added and incubation was continued for 24 h prior to cell harvesting and agarose gel electrophoresis of fragmented DNA.