GO heat map and clustering. GO based clustering dendrogram of the selected genes (vertical axis) is visualised along with the expression patterns that are used to cluster the samples (horizontal axis). There are nine GO-based clusters named G 1,...,G 9 that contain more than one gene. The GO clusters are separated by a horizontal bar in the heat map. Genes without annotations are omitted from the heat map. Overexpressed genes are shown with white or yellow color and underexpressed genes with red color.