Figure 5
From: Evolutionary origin of peptidoglycan recognition proteins in vertebrate innate immune system
Acceleration of evolutionary rate in the latest stages of vertebrate evolution. Poisson distances of 19 taxa are plotted against species divergence time. The divergence times depicted in the abscissa correspond to: human-artiodactyls, human-mouse, human-chicken, human-frog; and human-fish with 65 MYA, 80 MYA, 228 MYA, 360 MYA and 450 MYA, respectively [38]. MYA: Million years ago.