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. 2022 May 12;22(10):3684. doi: 10.3390/s22103684

Figure 3.

Figure 3

Aptamer immobilization protocols applied in the electrochemical aptasensors: (a) interaction of thiolated aptamer with Au nanoparticles/bare Au electrode; (b) carbodiimide binding to carboxylated support; (c) electrografting with diazonium salt generated from aromatic amino group; (d) cross-binding with glutaraldehyde of aminated aptamer and carrier.