Figure 2

PFGE profiles of the Shigella sonnei biotype g isolates, 1981–2000. Lanes: 1, Salmonella Braenderup H9812 (molecular weight standard); 2–12, S. sonnei biotype g isolates: 2, epidemic strain, Palermo, Italy, 2003; 3, Brindisi, Apulia, 1989; 4, Brindisi 1990; 5, Palermo 1991; 6, Palermo 1994; 7, Palermo 1995; 8, Reggio Calabria, Calabria, 1991; 9, Palermo 1994; 10; Palermo 1995; 11, Messina, Sicilia, 1993; Palermo 1996.