Figure 2From: Pandemic influenza A virus codon usage revisited: biases, adaptation and implications for vaccine strain developmentPosition of the 310 H1N1 pdm IAV ORF’s in the plane defined by the first two major axes generated by COA. The percentage of inertia of the first and second axes of COA is indicated for both axes between parentheses. The input values for COA were the RSCU values of each strain.Back to article page