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. 2019 Jan 21;9(1):130. doi: 10.3390/nano9010130

Figure 5.

Figure 5

Schematic illustration of the detection principles of HRP-Ab2/AFP/Ab1/GS-CHI/SPCE (a) and HRP-Ab2-CNSs/AFP/Ab1/GS-CHI/SPCE; (b) using a signal amplification strategy at the graphene sheets biosensor platform. Reproduced from [67], with permission from American Chemical Society, 2010.