Hierarchical clustering of the 17 tissues studied. Hierarchical clustering analysis was performed using the hclust command in R. All of the samples were merged according to their corresponding tissues, which resulted in a matrix of the mean beta values for all of the CpG sites detected in the 17 total tissues. The clustering tree was generated using the complete method. The tree shows strong correlation between similar tissue types.
Lokk et al. Genome Biology 2014 15:r54 doi:10.1186/gb-2014-15-4-r54