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Pulsed field gel electrophoresis (PFGE) XbaI dendrogram showing the relationship between Salmonella strains. The code for the isolated Salmonella strains: The first letter corresponds to the sampling site (A, B, C, F, G, I, or J); the second and third letter indicate the sampling month (1S, 2S, or 4S); the fourth specifies the depth (30 cm, 1, 2, 3, and 4 m); and the dash and number represent an isolated colony within a sample.
