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A) Pulsed-field gel electrophoresis (PFGE) fingerprint of USA400 and PFGE pattern B1. B) Dendrogram showing relationship of the unique fingerprints, along with the PFGE type designation (11) and other molecular characteristics of each subtype. CDN, Canadian Diseases Network; MLST, multilocus sequence typing; SCC, staphylococcal chromosome cassette.
