PPI z-scores of regulatory motifs. The box-plots of PPI z-scores for regulatory motifs regulated by different combinations of regulators: (A) TF-TF, (B) miRNA-miRNA, and (C) TF-miRNA. The numbers next to the red line in the box-plot represent the median of PPI z-scores.
Lin et al. BMC Systems Biology 2012 6:18 doi:10.1186/1752-0509-6-18