Ce:GAGG microparticles
Delivery StrategyCe-doped Gd3(Al,Ga)5O12 (Ce:GAGG) microparticles are injectable yellow-emitting inorganic scintillators used as implanted transducers for X-ray-driven optogenetic control. In the cited study, they converted X-ray irradiation into local light sufficient to activate ChRmine and inhibit via GtACR1, enabling bidirectional modulation of neural activity in mice.