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. 2017 Feb 21;7(4):935–944. doi: 10.7150/thno.17544

Figure 4.

Figure 4

Electrochemical signals as a function of concentrations of E. coli O157:H7 and Vibrio cholerae. (A) Electrochemical responses of the electrochemical biosensor at different concentrations of E. coli O157:H7 and Vibrio cholerae O1 (curves a-i, with concentration of 0, 5 × 10, 1 × 102, 5 × 102, 1 × 103, 5 × 103, 1 × 104, 5 × 104, 1 × 105, 2.5 × 105, 5 × 105 and 1 × 106 CFU/mL, respectively); (B) Calibration curve for the relationship between electrochemical signals and concentrations of E. coli O157:H7; (C) Calibration curve for the relationship between electrochemical signals and concentrations of Vibrio cholerae O1.