Fig. 6
From: The significance of proline and glutamate on butanol chaotropic stress in Bacillus subtilis 168
Specific growth-rate inhibition percentage of B. subtilis wild-type and the mutant strains with 1.4% (vol/vol) butanol exposure. The symbols represent genotype of the wild-type and each mutant strain: +, Δ represent the presence and absence of the indicated gene, respectively. During growth in LB medium and butanol exposure, cell optical density was interval measured to determine percentage of cellular growth inhibition. Data are means of the results from at least three individual experiments. Error bars indicate standard errors. The letters indicate significance level (p < 0.05)