One-way hierarchical clustering heatmap of significantly enriched gene sets (rows) versus tissues (columns) using the HG- (a) and the GSZ- (b) statistics. The three-top gen sets per overexpression spot are selected in each of the maps. The heatmap color-codes the p-values of the respective score in log-scale (see the legends in the figure). The tissue categories are color-coded in the bar above the heatmap. The gene sets are clustered in vertical direction. The capital letters approximately assign clusters of enriched gene sets in correspondence with the spots selected in Figure 7a. The GSZ-score provides a larger number of gene sets (factor 1.8) and thus a more diverse pattern.