Single-Stranded DNA Aptamers against Pathogens and Toxins: Identification and Biosensing Applications

Figure 3

Illustration of examples of signal enhancement methods in ssDNA MRE based electrochemical biosensors. (a) A representation of a single-walled carbon nanotubes field effect transistors. (b) A representation of gold nanoparticles carrying redox labels in a sandwich detection style.

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(b)