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. 2015 Mar 2;5:8671. doi: 10.1038/srep08671

Figure 3.

Figure 3

(a), Fractional change of transmittance versus frequency for kanamycin sulfate with 1 pg/L (red), 10 pg/L (green), 0.1 ng/L (blue), 1 ng/L (cyan), and 10 ng/L (pink) concentrations. (b), THz transmission peak value versus concentration.