Fluorescent proteins are also useful for tracking cell populations, such as tumor cells, in vivo. Thus far, the best tools for imaging in live, whole animals have been far-red fluorescent proteins ...

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.

Protein Rainbow Previously available by license only, Palo Alto, Calif.-based BD Biosciences-Clontech is now offering academic and nonprofit researchers access to its collection of novel reef coral ...