Figure 3. ApoE regulates mitochondrial oxidative stress. Brain tissues (temporal lobe) were collected from 12-month old ApoE3 and ApoE4 mice. Proteins involved in mitochondrial oxidative stress were measured and normalized with an internal control (β-actin) in Western blot. (A) Representative Western blots for SOD2 and Foxo3a were shown. (B) SOD2 and (C) Foxo3a protein levels were analyzed and plotted (n= 6-9 per group, * p< 0.05).