Contact: Sue McGreevey
Massachusetts General Hospital
Caption: Light passing through an optical fiber (left) can either carry in a signal that stimulates the activity of cells embedded in the hydrogel implant or bring back a signal generated by cells responding to something in their environment.
Credit: (Harvard Bio-Optics Lab/Wellman Center for Photomedicine, Mass. General Hospital)
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Related news release: Hydrogel implant enables light-based communication with cells inside the body