Phylogenetic relationships from the 9-mer probe set between organisms hybridized on the UBDA array. All 262,144 9-mer data points for each of the 20 samples were RMA normalized and log2 transformed. A Pearson correlation matrix was created by comparing each sample against all other samples. The values were used to generate a taxonomic relationship tree using the PHYLIP software. The taxonomic tree, as visualized in the Treeview program, shows the separation between mammalian, bacterial and viral genomes.