Figure 4.

Minimum-spanning tree of MLVA10 and MLVA4 data from 60 C. difficile isolates from inpatients. 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. The numbers in parentheses inside circles denotes the strain number. MLVA types isolated from inpatient are labeled with an "H". One cluster was defined as MLVA types having a maximum distance changes at one loci. The different shaded colors denote isolates belonging to a particular cluster. Clusters marked with arrows are labeled by alphabetical order.

Wei et al. BMC Microbiology 2011 11:217   doi:10.1186/1471-2180-11-217
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