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. 2017 Nov 3;7(4):78. doi: 10.3390/biom7040078

Figure 2.

Figure 2

(A) Effect of copper ions concentration on E. coli BL21(DE3)/pGEX-4T-1 (black bars) and E. coli BL21(DE3)/pNdCTR1 (grey bars) after 24 h of treatment. Abscissa: CuSO4 concentration, mM; ordinate: CFU, lg. (B) Effect of time on survival of E. coli BL21(DE3)/pGEX-4T-1 and E. coli BL21(DE3)/pNdCTR1 treated with 0.25 mM copper ions (protocol of the experiment). (C) Bar graph corresponding to the (B) experiment repeated three times. Black bars: E. coli BL21(DE3)/pGEX-4T-1; grey bars: E. coli BL21(DE3)/pNdCTR1.