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AMB Express
Fig. 2 | AMB Express

Fig. 2

From: Acceleration of emergence of E. coli antibiotic resistance in a simulated sublethal concentration of copper and tetracycline co-contaminated environment

Fig. 2

Mutation frequency changes for a polymyxin B (Pol), b chloramphenicol (Chl) and c, d tetracycline (Tet) respectively induced by copper ions (Cu) or tetracycline (Tet) and their co-contaminations. LB-control was without any treatment. H: Strains exposure at high copper ion concentrations; L: Strains exposure at low copper ion concentrations. All experiments were performed in triplicate. All experiments were manipulated in triplicate. Significant differences were tested: * (P < 0.05), ** (P < 0.01) and *** (P < 0.001)

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