Figure 2. ALDH1A3 was essential for radioresistance in GBM cell lines. (A) The mRNA expression levels of ALDH1A3 when GBM cells were exposed to different doses of irradiation (0 Gy, 2 Gy, 4 Gy and 6 Gy). (B) The amount of ALDH1A3 protein in GBM cells after being exposed to various doses of irradiation (0 Gy, 2 Gy, 4 Gy and 6 Gy). β-actin served as control. *p < 0.05, **p < 0.01.