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The homemade FRET detection system based on a single 400 nm UV LED, a disposable ITO glass slide, a miniature 16-bit CCD-array spectrophotometer, and optical fibers: (a) schematic diagram of the detection system setup; (b) picture of the detection device setup (the main body of the device was made of PMMA with dimensions of 8.4 × 4.5 × 4.3 cm3); (c) ITO with a transparent, 20 μL microchamber created by the Microarray Gene Frame®.
