(A) Effect of silver ions on E. coli Bl21(DE3)/pGEX-4T-1 and BL21(DE3)/pNdCTR1 after 24 h of treatment (protocol of the experiment). (B) Bar graph corresponding to the (A) experiments repeated three times. Black bars: E. coli Bl21(DE3)/pGEX-4T-1; grey bars: BL21(DE3)/pNdCTR1. Abscissa: AgNO3 concentration, µM; ordinate: CFU, lg. (C) Effect of time on survival of E. coli BL21(DE3)/pGEX-4T-1 and E. coli BL21(DE3)/pNdCTR1 treated with 3.5 μM AgNO3 (protocol of the experiment). (D) Bar graph corresponding to the (C) experiment treated three times. Black bars: E. coli Bl21(DE3)/pGEX-4T-1; grey bars: BL21(DE3)/pNdCTR1. Abscissa: time of treatment, h; ordinate: CFU, lg. (E) Dynamic of Ag accumulation by E. coli BL21(DE3)/pGEX-4T-1 (black bars) and E. coli BL21(DE3)/pNdCTR1 (grey bars) during incubation in 3.5 μM AgNO3. Abscissa: time, h; ordinate: CFU, lg.