Figure 3

Plot of percentage of maximal intensity versus CV values calculated for the expression levels of genes in the 9 validation datasets (dark-blue small squares). Purple solid triangles show the top 40 genes with highest variability in ratio and signals (supplementary Table S2 [21]). Functionally related genes showing validation experiment-dependent SDs (Figure 2) are indicated by cluster 1 (solid yellow circles), cluster 2 (open light-blue triangles), cluster 3 (open red squares), and cluster 4 (open green circles).