Fig. 6.

Cell-type specific activation of caspases by Tempol, Gentian Violet and Brillant Green. MCF-7 (A) and ZR75.1 (B) were treated with the indicated concentration of Tempol (T), Gentian Violet (GV) or Brilliant Green (BG) for 24 h. WCE were analyzed by immunoblot for cleaved-caspase 3 (19 and 17 kDa), cleaved-caspase 7 (20 kDa) and PARP (Full-length 116 kDa and cleaved 89 kDa). Equal loading was monitored using anti-actin antibodies. Representative immunoblots of three different experiments are shown.