Figure 2. The effect of aging on total protein expression in brain structures. The comparison of proteins identified quantitatively in cortex, cerebellum and hippocampus and the number of proteins affected significantly (p<0.05) by aging (A).The total molar (pmol/mg) concentration of proteins in brain formations of young and middle-aged mice (B). Asterisks indicate a statistically significant difference (p < 0.05).