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Volume 5, Number 2—April 1999

Synopsis

Clonal Differences among Erythromycin-Resistant Streptococcus pyogenes in Spain

Emilio Perez-Trallero*, José María Marimón*, Milagrosa Montes*, Beatriz Orden†, and Manuela de Pablos‡
Author affiliations: *Universidad del País Vasco, San Sebastián, Spain; †Centro Especialidades "Argüelles," Madrid, Spain; ‡Hospital Txagorritxu, Vitoria, Spain

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Figure 2

A dendrogram showing the genetic relationship of 15 clones of M-phenotype erythromycin-resistant Streptococcus pyogenes and two erythromycin-sensitive strains (ErS) established from pulsed-field gel electrophoresis patterns obtained after SfiI digestion by using the Dice coefficient and UPGMA and Lane Manager 2.1 software. Clone A (III/T12/emm12a); Clone B (I/T4/emm4); Clone C (I/T4/emm4); Clone D (V/T8,25/emm75); Clone E (I/T1/emm1); Clone F (I/T28/emm28); Clone G (I/ TB3264/emm ntb); Clone H (

Figure 2. A dendrogram showing the genetic relationship of 15 clones of M-phenotype erythromycin-resistant Streptococcus pyogenes and two erythromycin-sensitive strains (ErS) established from pulsed-field gel electrophoresis patterns obtained after SfiI digestion by using the Dice coefficient and UPGMA and Lane Manager 2.1 software. Clone A (III/T12/emm12a); Clone B (I/T4/emm4); Clone C (I/T4/emm4); Clone D (V/T8,25/emm75); Clone E (I/T1/emm1); Clone F (I/T28/emm28); Clone G (I/ TB3264/emm ntb); Clone H (III/TB3264/emm2); Clone I (I/T4/emm4); Clone J (V/T8,25/emm75); Clone K (II/T2/emm2); Clone L (III/T nt/ emm nt); Clone M (III/T12/emm12); Clone N (III/T12/emm12); Clone O (III/Tnt/emm nt); ErS T12 (III/T12/emm12); ErS T4 (I/T4/emm4). aBiotype/T-serotype/emm type. bnt = nontypeable.

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