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.
Grillo-Puertas et al. BMC Microbiology 2014 14:72 doi:10.1186/1471-2180-14-72