FIG. 1.

Quorum-sensing-regulated luminescence expression in various V. cholerae strains. Overnight cultures were diluted 1:100 in LB and incubated at 30°C. Luminescence was measured at the time indicated. Lux expression curves were grouped on the basis of the strain biotypes. The values are means ± standard deviations (error bars). The results are representative of three experiments. AU, arbitrary unit.