Figure 4

E. coli ATCC 25922 was diluted to give starting inocula of between 10¹ and 10⁷ cfu mL⁻¹ and cultured in Mueller Hinton cation adjusted broth at 2×–0.0625× the standard concentration. These cultures were incubated for up to 5 h at 37 °C. The points represent the mean of three independent biological observations of output mV. In (A), mean data points are linked, and in (B), data are fitted to a modified Gompertz equations (solid line) and (C). Data are fitted to a Broken Stick equations (hatched line).