Dendrogram based on the presence/absence of regions of difference (RD) among S. suis isolates. RDs were defined as at least three consecutive ORFs that were absent from at least 1 strain. Naming of clusters is corresponding to the CGH clustering.
de Greeff et al. BMC Microbiology 2011 11:161 doi:10.1186/1471-2180-11-161