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Dendrogram and PFGE patterns of XbaI-digested genomic DNA of S. enterica serovar Typhimurium isolates. The dendrogram was constructed based on the unweighted-pair group method using average linkages algorithm and the Dice similarity coefficient by using BioNumerics software with 3% optimization and 1% position tolerance. The genotypes are indicated as I, II, III, and IV. S. enterica serovar Braendrup strain H9812 was the PFGE size marker.
