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Minimum-spanning tree, as constructed from the MLST data of 88 S. aureus isolates collected from retail food products in Denmark. Circle sizes represent the number of isolates, and circle areas are colored by food source and labeled with sequence types (STs). The different colors represented isolates from retail chicken (n = 29), pork (n = 19), sushi (n = 17), turkey (n = 13), and pasta salad (n = 10).
