Figure 5From: Copper tolerance mediated by polyphosphate degradation and low-affinity inorganic phosphate transport system in Escherichia coli Copper tolerance in exponential phase cells. Copper tolerance of 6 h MT or MT + P growing cells of the indicated strains (panels A-F) was determined after one-hour exposure with different copper concentrations. Serial dilutions of cells incubated without copper (control) or treated cultures were spotted in LB-agar plates. Data are representative of at least four independent experiments.Back to article page