Fig. 2. Western blot showing p73, p63 and p53 endogenous protein expression in SH-SY5Y, IMR-32, LAN-1 and MCF-7 cell lines. Total protein extracts were obtained as previously described (Goldschneider et al., 2004) and 30 µg total lysate was loaded for western blotting. The blot on the right was overexposed for 30 minutes rather than 0.5 minutes as for the blots on the left.