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Allele-specific mutation frequencies observed in MLVA types 2-15-8-10-212 and 2-26-6-19-112 at three VNTR loci: STTR5, STTR6, and STTR10 in vitro experimental evolution. In each repeat size, top bars depict upward mutations (insertion) while bottom bars correspond to downward mutations (deletion). Where observed frequencies are larger than zero, standard errors are plotted as error bars.
