Figure 4

Hierarchical clustering analysis on the variation within each of the 6 main clonal complexes, as described by the first 6 principal components (ΔPC1 – ΔPC6). A complete linkage clustering on the weighted results of ΔPC1 – ΔPC6, which together described 83% of the variation present within the entire data set, separate nearly all of the S. aureus isolates up into three unique groups. The small group indicated by *, represents two S. aureus isolates from CC8 which differ from the rest of CC8 as they are ST72 MRSA isolates, and hence form an outlier. ΔPC3 (left) does not strongly distinguish PR3-ANCA (red), MPO-ANCA (blue) and HC isolates (green) from one another and hence is represented as the top bar being the least relevant.