Poos K. et al. PLoS Comput Biol. 2013 - 'Signaling' network
Node shapes correspond to the distinct node types:
microRNAs (diamond), TFs (triangle), primary target (rectangle), and secondary target (circle). Yellow edges mark TF-DNA interactions, blue edges microRNA-target interactions, and dashed grey edges protein interactions. The red/green color code indicates the log2 FC.