Similarities in Gene Expression Profiles during In Vitro Aging of Primary Human Embryonic Lung and Foreskin Fibroblasts

Figure 2

3D PCA plot for 30 samples (2 cell lines, 5 different PDs, triplicates). Both cell lines are clearly separated by PC2. The effect of aging is partly explained by PC1 and PC3. Colors: yellow to blue: young to old MRC-5 cells; green to red: young to old HFF cells.