Figure 1.

Data quality and variation. A-C. Plots of DNA methylation levels between a random pair of samples from the same tissues. D-F. Plots of average DNA methylation levels between the three tissues, heart, kidney and liver. G-I. Plots of RNA-Seq expression levels between the three tissues. J-L. QQ plots of RNA-Seq expression levels between the three tissues.

Xie et al. BMC Systems Biology 2011 5(Suppl 3):S4   doi:10.1186/1752-0509-5-S3-S4