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. 2020 Aug 13;10(8):1592. doi: 10.3390/nano10081592

Figure 5.

Figure 5

(A) Dependence of the gRET efficiency for energy transfer from FITC to AuNP@Cit on PD-L1 concentration showing saturation at higher PD-L1 concentrations. (B) Details of the limit of detection (LOD) determination using 3σ method (LOD = 1.2 nM). FITC concentration: 66.7 nM, CAuNP@Cit = 2.02 nM, λex = 495 nm.