mushroom anemone harbored a fluorescent protein homolog, commonly known as DsRed, emitting in the orange-red region (583 nm) 2. Counterbalancing this favorable shift to the red were several ...

DsRed, a recently cloned red fluorescent protein, has attracted great interest as an expression tracer and fusion partner for multicolor imaging. We report that three-photon excitation (λ <760 nm ...