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. Author manuscript; available in PMC: 2009 May 29.
Published in final edited form as: Nature. 2008 Apr 16;453(7195):615–619. doi: 10.1038/nature06945

Figure 4. Differences in phylogenetic history among segments of H3N2 influenza A virus.

Figure 4

A multi-dimensional scaling plot of distances between samples of 500 trees for each segment of A/H3N2 viruses sampled from New York state. The tree-to-tree distances are calculated as one minus the correlation coefficient of the vector of TMRCAs for each season. Each cloud of points of equal colour represents the statistical uncertainty in the phylogenetic history of an individual genomic segment (with the centroids of each segment distribution indicated). Considering each comparison in a pairwise manner between segments reveals a similar pattern (Supplementary Fig. 12).