Clustering of strains using neighbor-grouping analysis. The figure shows the relationships among the 17 Staphylococcus aureus genomes under study based on the percentage of shared distributed gene. Valid neighbor groups of genomes (see Materials and Methods) are enclosed in ellipses.
Boissy et al. BMC Genomics 2011 12:187 doi:10.1186/1471-2164-12-187