As shown in Figure 2, the expression levels for HSP 27 (29 kDa), ALDH (aldehyde dehydrogenase, 50 kDa), and Mn-SOD (20 kDa) were higher in GBM (n = 4 for Hsp27 and ALDH and n = 6 for MnSOD) in comparison to their expression in non-tumorous samples, thus confirming the DIGE analysis. Here, SOD2 is linked to glioblastoma.