Figure 3. Minimum spanning tree of the 893 typed S. aureus isolates created using BioNumerics v7.6 using default settings. Each circle indicates a spa type, 278 spa types were observed, 161 spa types were observed only once. The size of the circles corresponds to the number of isolates with that spa type. The five most prevalent spa types are indicated. Colours indicate the origin of the isolate. 104 Chapter 2.4
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