Graph showing the duration of the "unsampled ancestry of different S-OIV genes. The data is from Table 1 of , and the error bars give the "95% credible intervals". The data from the lineage of the triple reassortant parent are in blue, those from the Eurasian 'avian-like' swine virus lineage in red. The black triangles indicate the mean and standard deviation of the values for the triple reassortant and MP lineage genes combined.
Gibbs et al. Virology Journal 2009 6:207 doi:10.1186/1743-422X-6-207