The Distribution of Cytotoxic Necrotizing Factors (CNF-1, CNF-2, CNF-3) and Cytolethal Distending Toxins (CDT-1, CDT-2, CDT-3, CDT-4) in Escherichia coli Isolates Isolated from Extraintestinal Infections and the Determination of their Phylogenetic Relationship by PFGE

Figure 3

(a) Ladder size: 3000 bp, lines 1–3–4–5–12–14–16–18–19: cnf1 positive (1111 bp); line 15: cnf3 positive (757 bp). (b) Ladder size: 3000 bp, lines 6–8–11 cnf2 positive (1240 bp). (c) Ladder size: 3000 bp, line 4, 5, 6, and 8 cnf1 positive (1111 bp), line 1; both cnf1 positive (1111 bp) and cnf2 positive (1240 bp), line 7; both cnf1 positive (1111 bp) and cnf3 positive (757 bp). (d) Ladder size: 3000 bp, line 1, 3, 4, 9, 11, 13, 15, and 16, cnf1 positive (1111 bp), line 12, cnf3 positive (757 bp). (e) Ladder size: 3000 bp, line 18, both cnf1 positive (1111 bp) and cnf3 positive (757 bp).

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