Figure 4. Genes involved in protein folding process and stress response are decreased in old aortae. Normalized counts of significantly differentially expressed genes involved in protein folding process and stress response in mouse aortae. Data are presented as a scatterplot of individual points with mean±SD, n=5. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001 compared to young aortae, unpaired two-tailed Student's t-test.