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. 2016 Nov 21;17:947. doi: 10.1186/s12864-016-3298-6

Fig. 3.

Fig. 3

Unfolded site frequency spectra for isolates from the S75 outbreak cluster (L4:S75) and non-S75 isolates from the New York City area. Dark and light blue bars indicate the number of non-synonymous and synonymous SNPs at each SNP allele frequency (from singletons on the left to SNPs at fixation on the right)