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(A) Schematic of the fluorescence imaging setup (FluoroPi). (B) Photograph of the FluoroPi system. (C) Excitation (dashed lines) and emission (solid lines) spectra of SmartProbes: NBD-PMX (green) and Merocy-Van (red). Solid-color blocks show the FluoroPi blue and orange LEDs and associated emission filter band widths for fluorescence excitation and collection.
