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. 2017 May 17;12(5):e0177784. doi: 10.1371/journal.pone.0177784

Table 3. Phenotype homogeneity among single colony picks from oropharyngeal swabs taken from pediatric patients with pharyngitis.

No. of colony picks per patient No. of patients yielding 100% SpeB-producer colony picks* No. of patients yielding 100% SpeB-non-producer colony picks* No. of patients yielding a mixture of SpeB- producer and non-producer colony picks
2 to 10 7 1 0
11 to 24 21 6 0
≥ 25 24 9 0

* Columbia-SM agar assay