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. 2021 Dec 27;22(1):161. doi: 10.3390/s22010161

Figure 3.

Figure 3

Schematic illustration of simultaneous determination of AFB1 and OTA using (A) the hDNA-based and (B) ssDNA-based dual-ratiometric electrochemical aptasensor (reprinted with permission from Zhu et al. [82]).