Growth characteristics of the Δ<i>secDF</i> mutant in LB with and without glucose.

<p>Growth of <i>B. cereus</i> ATCC 14579 (WT) and <i>ΔsecDF</i> mutant in <b>A</b>) LB (no glucose) and <b>B</b>) LBG (1% glucose) in shaking cultures at 30°C. The graphs show average OD_600nm values with standard deviations of two independent cultures for each strain. <b>C</b>) light micrographs of cultures after 24 h growth. <b>D</b>) growth of WT (left) and the Δ<i>secDF</i> mutant (right) at 30°C for 16 h on LB and LBG agar. All pictures represent results of at least two independent experiments.