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. 2021 Feb 18;12(2):208. doi: 10.3390/mi12020208

Figure 4.

Figure 4

Schematic of an electrochemical aptamer-based biosensor demonstrating altered electron transfer efficiency upon binding of neurochemicals. (A) SWV detection of ATP with the aptamer fold and alter electron transfer of tag, thereby increasing the observed peak. Adapted with permission from [147]. (B) EIS detection of ATP with charge transfer resistance Rct increased by ATP concentration. Adapted with permission from [148].