Figure 2From: Concordant and discordant DNA methylation signatures of aging in human blood and brainAge-associated PCs validated in independent datasets. The projections of each CpG site onto PC4 and PC5 were used to reconstruct these PCs in (A) 40 brain samples, (B) 656 blood samples, (C) 96 buccal swabs, and (D) 85 liver samples. r values and P values for each correlation are shown. PC, principal component.Back to article page