Fig. 2

PCA and clustering analyses of the expression for each tissue based on different gene sets. A PCA of the log-transformed normalized expression levels of all orthologs across liver samples. Species are represented by point shape. B PCA of the log-transformed normalized expression levels of all orthologs across pancreas samples. Species are represented by point shape. C Clustering of liver samples based on log-transformed normalized expression values. Distance between samples was measured by Spearman's rank correlation coefficient. D Clustering of pancreas samples based on log-transformed normalized expression values. Distance between samples was measured by Spearman's rank correlation coefficient