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. 2011 Mar 28;6(3):e17943. doi: 10.1371/journal.pone.0017943

Figure 2. Pulse field gel electrophoresis (PFGE) of Streptococcus suis serotype 2 strains isolated from tonsils of healthy pigs.

Figure 2

Six S. suis serotype 2 strains isolated from patients with meningitis in southern Vietnam whose PFGE patterns represent the dominant PFGE patterns across S. suis serotype 2 strains isolated from humans (labeled A–F), were included for comparison purpose. A dendrogram was generated by Dice analysis (band tolerance, 1.3%) and cluster analysis with unweighted pair group method with arithmetic mean, using Bionumerics software (Applied Maths, Belgium). Bars indicate 95% confidence intervals. Columns: Cls: PFGE cluster; Pro: province of pig's origin or patients' residence; Date: date of tonsil collection or patients' admission; SH: slaughterhouse ID; WS: Whole sale seller ID; ST: sequence type, Res: tetracycline and erythromycin resistance gene detected by PCR and sequencing, ef: epf or epf* gene detected by PCR. CC: Cu Chi- HCMC; LA: Long An; HM: Hoc Mon – HCMC; HCM: Ho Chi Minh City; BD: Binh Duong; BTr: Ben Tre; DN: Dong Nai; BTh: Binh Thuan. O: amplicons of tet(O) gene detected. M: amplicons of tet(M) gene detected. B: amplicons of erm(B) gene detected. L: amplicons of tet(L) gene detected *: amplicons of mosaic tetracyclin resistance encoding gene tet(O/W/32/O) detected in these strains. #: no amplicons of erm(A), erm(B) or mef(A) were detected in these erythormycine resistant strains. 0: no amplicons of epf or epf* gene detected. 1: amplicons of epf gene detected. 2: amplicons of epf* gene detected.