Minimum-spanning tree of MLVA34 data from 142 C. difficile isolates. Each circle represents unique MLVA type. The numbers between circles represent the VNTR loci differences between MLVA types. The numbers inside circles represent the PCR-ribotype groups. MLVA groups were defined as MLVA types having a maximum distance changes at one loci. The different shaded colors denote isolates belonging to a particular MLVA groups. Hyphenated numbers represent the MLVA groups marked with arrows.
Wei et al. BMC Microbiology 2011 11:217 doi:10.1186/1471-2180-11-217