In agreement with the oxidative stress determination results, fewer TUNEL+ cells were found in the PD group (P < 0.01 versus vehicle group, Figures 2(a) and 2(b)), and expression of the pro- and antiapoptosis proteins Bax and Bcl-2 decreased and increased, respectively (P < 0.05 for Bax and P < 0.01 for Bcl-2, Figure 2(c)–2(e)). This evidence concerns the gene BCL2 and Parkinson disease.