Susceptibility to colicin ColE2 was measured for ancestral and evolved <i>E</i>. <i>coli</i>.

<p>Colicin susceptibility was also determined in the presence of supernatant obtained from cognate <i>S</i>. Typhimurium clones. Student’s <i>t</i> test was used to determine statistical significance, and correction for multiple testing was done using Bonferroni’s correction method. The data underlying this figure can be found in <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.3002889#pbio.3002889.s015" target="_blank">S1 Data</a>, in the sheets titled “colicin_susceptibility” and “colicin_suscep._Sal_spentmedia.”</p> <p>(DOCX)</p>