Figure 4.

A core conserved vertebrate tissue transcriptome. Expression ratios of the measured and predicted expression patterns of 1,488 1-1-1-1-1 orthologs as described in the text and Materials and methods are shown. Two-dimensional hierarchical agglomerative clustering using a distance metric of 1 – Pearson correlation followed by clustering and diagonalization [44] was applied to the expression ratios of each ortholog in each tissue over all five datasets.