> Specifically, the dye was found to absorb light in the near ultraviolet and blue part of the spectrum, which allowed red and orange light to penetrate deeper

> Specifically, the dye was found to absorb light in the near ultraviolet and blue part of the spectrum, which allowed red and orange light to penetrate deeper into the tissue of mice. So not quite "invisible ghost mice" with which one might take over a town. Dammit.