Fig. 3From: What lies beneath? Molecular evolution during the radiation of caecilian amphibiansProtein-protein interaction (PPi) network predicted from the positive selected genes of the Gymnophiona branch (branch 1) that are involved in the ECM-receptor interaction pathway with a binding interaction (blue line) between lamc1 and itga3, and a reaction interaction (black line) between vwf and qsox1 (the latter protein-coding gene is part of a second shell of interactions)Back to article page