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. 2016 Dec 18;16(12):2174. doi: 10.3390/s16122174

Figure 4.

Figure 4

The time taken until a detectable response was determined for the five lead biosensors was found to range between 30 and 100 min after the addition of varying concentrations of Pb(II) (* p < 0.05). The p-value indicates the earliest significant increase in RFU per OD600 nm, in comparison to the time point 0 after induction with Pb(II). (a) E. coli DH5α(pBBpbrRgfp) (5 µg·mL−1); (b) P. aeruginosa PAO1(pBBpbrRgfp) (0.2 µg·mL−1); (c) S. oneidensis MR-1(pBBpbrRgfp) (5 µg·mL−1); (d) Enterobacter sp. NCR3(pBBpbrRgfp) (2 µg·mL−1); and (e) Enterobacter sp. LCR17(pBBpbrRgfp) (5 µg·mL−1). Note: For S. oneidensis MR-1(pBBpbrRgfp) only one biological replicate is shown. For Enterobacter sp. LCR17(pBBpbrRgfp) two biological replicates are shown.