Figure 4
From: MDA-7/IL-24 suppresses human ovarian carcinoma growth in vitro and in vivo
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1476-4598-6-11/MediaObjects/12943_2006_Article_219_Fig4_HTML.jpg)
Ad-mda7 activates the caspase cascade in tumor cells. Activation of caspase-9, caspase-3 and PARP indicated by their cleavage products was observed in Ad-mda7-treated tumor cells but not in Ad-mda7-treated normal cells. β-actin was used as a loading control.