S3 Fig -

<p>Levels of the <i>rhl</i> QS signal molecule C<sub>4</sub>-HSL (<b>A</b>) and the <i>las</i> QS signal molecule 3OC<sub>12</sub>-HSL (<b>B</b>), normalized to cell density (OD<sub>600</sub>), in the supernatants of <i>P</i>. <i>aeruginosa</i> PAO1 and the <i>apaH</i> mutant, carrying or not the empty plasmid pME6032 or the plasmid pME<i>apaH</i>, cultured at 37°C in LB, supplemented with 100 μM IPTG in the case of strains carrying the plasmids. Values are the mean (± standard deviation) of three independent assays. No statistically significant differences (<i>P</i> > 0.05) were observed with respect to PAO1 unpaired <i>t</i> test) or PAO1 pME6032 (ANOVA).</p> <p>(PDF)</p>