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. 2019 Nov 22;19(23):5111. doi: 10.3390/s19235111

Figure 1.

Figure 1

The fabrication process of the DNA biosensor starting from blank screen-printed electrode (SPE) to the immobilization of DNA onto the modified (SPE-Gold nanoparticles) before being exposed with carcinogen and methylene blue (MB). Differential pulse voltammetry (DPV).