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Results of AP-PCR assay for representative O3:K6, O4:K68, and O1:KUT strains isolated in various geographical locations and from international travelers. Results obtained with different primers are shown in different panels as indicated. For all panels, lane designations correspond to the experimental strain numbers listed in Table 2. M1, molecular size markers (mixture of phage λ DNA digested with HindIII and phage φX174 DNA digested with HaeIII).
