Figure. Pulsed-field gel electrophoresis profiles of the three strains after digestion with XbaI (left) and SpeI (right). Lane M, molecular size markers. Lane 1, porcine strain. Lane 2, bovine strain. Lane 3, human strain. Lane 4, comparison strain Salmonella enterica serovar Typhimurium DT104A with a different resistance pattern. Lane 5, S. Typhimurium DT104L strain with the common pentaresistance pattern.