Photorelease of proteins from a hydrogel. Top: The mCherry red fluorescent proteins are tethered to the hydrogel. Researchers can cleave the tether with directed light (blue arrows), releasing the mCherry from the hydrogel (blue arrows). Bottom: An image of the hydrogel after mCherry release patterned in the shape of the University of Washington mascot (black). Scale bar is 100 micrometers.
Shadish, Benuska and DeForest, 2019, Nature Materials.