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. 2024 Aug 22;29(16):3974. doi: 10.3390/molecules29163974

Figure 4.

Figure 4

(a) Working principle of the dual-ratiometric aptasensor based on EC and PEC assays; (b) The detection of AFB1 in EC mode and PEC mode; (c) Priority binding order of the four aptamers with PAT; (d) Mechanism diagram of PEC/visualization dual-mode detection of DON.