Fig 1.

Relationships of PFGE profiles for 230 S. enterica isolates from harbor porpoises according to an unweighted-pair group method using average linkages (UPGMA) dendrogram. The animal source is indicated for selected isolates by capital letters outside the dendrogram which designate the porpoise from which strains were isolated. Letters are followed by an asterisk for porpoises from which all isolated strains possessed identical PFGE profiles. Arrows indicate identical PFGE profiles in multiple porpoises. The strain designations of isolates that were subjected to MLST analysis are highlighted in red, whereas red dots indicate nodes connecting PFGE profiles that differed by fewer than four band differences.