Fig. 2
From: Extensive variation between tissues in allele specific expression in an outbred mammal
Tissue x Tissue heat map and hierarchical clustering of gene expression data. Colour key indicates the level of expression “relatedness” between tissue types, the darker the colour, the more similar the pattern of gene expression. The histogram in the colour key represents a density plot of the frequency of distance values. The variability in gene expression between tissues is represented by the height of the dendrogram branches