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PFGE Profiles of Isolates according to Swedish PFGE Protocol
Classification of the 35 prevalent Swedish profiles including the six reference strains indicated by *. The unweighted pair group method using arithmetic averages (UPGMA) with 1 % band tolerance and 1 % optimization settings was used as the clustering method. In this figure only DNA profiles obtained after restriction with XbaI are shown. The serotype (Fim) and pertactin types (prn) represent the most prevalent types within the profile. Gp refers to the grouping system described by Weber et al .
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