Similarly for both assays, the quantification of the color (colorimetric ... the dye appears red. Whatever the case, it is easy to see that uses for fluorescent dyes are extensive. Importantly, dyes ...

Figure 1: The fluorescent protein color palette has expanded ∼140 nm into longer wavelengths over the past 15 years to include many new variants in the orange, red and far-red spectral regions.

However, to produce far-red fluorescence ... also be useful for cell-based imaging. “Infrared fluorescent proteins provide another color well-separated from those of existing fluorescent ...