Fig. 4From: Effect of genome composition and codon bias on infectious bronchitis virus evolution and adaptation to target tissuesScatterplot reporting the relationship between Nc and Ncp and GC3 content of IBV coding sequences. IBV proteins have been color−coded while the host genes have been reported in grey. The line representing the expected Nc values, which would result from GC composition being the only factor influencing the codon usage bias, has been superimposed. The figure was generated using ggplot2 [32]Back to article page