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Clustering tree obtained using high-throughput VNTR assay. (A) General view showing that strains segregated based on their agr type in groups of various sizes. (B) Magnification showing a single cluster of agr type IV. (C) Small cluster of misclassified agr type I coclustered with type IV strains. An asterisk indicates that precise typing was obtained from sequence data (GenBank accession number DQ435772) performed with primers F_agr type I and R_agr type IV (see Table 1).
