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. 2008 Nov 7;8(11):7050–7084. doi: 10.3390/s8117050

Figure 7.

Figure 7.

Quantum dot (QD)-based biosensors. a) The FRET-based QD aptamer biosensor by the Ellington group [55]. b) In the QD-based biosensor by Choi and colleagues [56], target binding results in the transfer of a charge from the ligand to the QD, resulting in the quenching of its photoluminescence.