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(A) AP-PCR analysis of genomic DNAs of the L. pneumophila serogroup 6 strains listed by number in Table 1. The primers used for PCR are indicated above each electropherogram. M, molecular weight marker. The numbers on the left of each gel indicate the length (in base pairs) of reference fragments. (B) Dendrogram showing the degree of similarity between the AP-PCR patterns given in Table 2.
