DAVID analysis of the genes associated in the QSG associated with node 54 (see Figure 5). In A is shown a graphical representation of the four overrepresented groups obtained using the "Gene Functional Classification" menu with a "high classification stringency" option. The four groups displayed an enrichment of respectively 3.01 times, 2.48 times, 1.21 times and 0.19 times. The genes are displayed in lines and the functional categories in columns. In B and C are shown an enlargement of the first two groups. Blue squares indicate a gene that belongs to a functional category.