Population snapshot of 135 erythromycin-resistant pneumococcal isolates as revealed by eBURST analysis. One spot indicates one ST. The size of one spot corresponds to the number of pneumococcal isolates with the same ST. The lines indicate the presence of single locus variant SLV links among particular STs.
Zhou et al. BMC Microbiology 2012 12:228 doi:10.1186/1471-2180-12-228