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. 2020 Nov 4;20(21):6289. doi: 10.3390/s20216289

Figure 3.

Figure 3

Basic operation principle of a fluorescent sensor for miRNA detection that employs graphene oxide (GO). (a) DNA probe is adsorbed by GO and the fluorophore is quenched. (b) miRNA hybridizes with DNA probe and both desorb from GO, the fluorophore emits light.