Color-coded expression-profile table of the genes selected from the antidepressant data by permutation test above the 99% percentile. Abscissa, treatment groups; ordinate, genes. The treatment groups and the genes are arranged according to the angular position in the PCA biplot (see Figure 7). Upregulation, red; downregulation, green.
Landgrebe et al. Genome Biology 2002 3:research0019.1-research0019.11 doi:10.1186/gb-2002-3-4-research0019