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Association between integron structure and PCR products modified from Sandvang et al. (36). The lines below the integron structure represent amplicons. The numbers above the PCR products refer to the primers used on V. cholerae O1 (see Table 3). 5′-CS and 3′-CS represent the 5′ and 3′ conserved segments of the integron; qacE and sul1 encode resistance to disinfectant and sulfonamide, respectively. Numbers correspond to the sequence positions in GenBank accession number D43625 (20).
