Additional file 3.

Sites undergoing positive selection detected using the FEL program. Note: Numbering of the three domains differs from that shown in Additional file 1. Rather, the sites positions of domains α2 and α3 are counted from the first amino acids of domain α1. Only those sites with a significance level <0.05 are shown. aNormalized dN-dS refers to dN-dS divided by the total length of the appropriate tree.

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Zhao et al. BMC Evolutionary Biology 2013 13:113   doi:10.1186/1471-2148-13-113