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. 2022 Sep 16;12(9):764. doi: 10.3390/bios12090764

Figure 1.

Figure 1

Overall structure of the detector: (A) a functional block diagram of the fluorescence detector, including optical components and drive circuit; (B) a schematic diagram of the optical path—blue indicates the excitation light, and green indicates the fluorescence emitted by sample; (C) a printed circuit board (PCB) picture of the fluorescence detector.