Figure 2From: Prevalence, distribution and evolutionary significance of the IS629 insertion element in the stepwise emergence of Escherichia coliO157:H7Gel-electrophoresis of the PCR products for IS 629 presence in strains belonging to the stepwise model of emergence of E. coli O157:H7. Lanes: Ld, molecular weight ladder (Gene Ruler); wt, Blank; 1 - 25, strains numbered according to Table 2. A1-A6, Clonal complexes, A?, CC unknown.Back to article page