FIG. 1.
The PFGE patterns of the most common genotypes of Y. pseudotuberculosis isolated during 2001 in Finland. The lanes show the DNA of serotype O:1 strains, S11, S12, and S13 (digested with SpeI) and N11 and N12 (digested with NotI); and the DNA of serotype O:3 strains, S32 and S33 (digested with SpeI) and N32 and N33 (digested with NotI). Of the main O:1 PFGE patterns, 32 strains represented pattern S12N12, 16 strains represented pattern S11N11, and 2 strains represented pattern S13N13. Of the main serotype O:3 PFGE patterns, 13 strains were of S32N32, 10 strains were of S33N33, 5 strains were of S33N32, and 3 strains were of S32N34.