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Engram cell in
Engram cell in AD mouse. This image depicts a single memory engram cell (green) in the hippocampal dentate gyrus (DG) region of a mouse model of early Alzheimer’s disease. To optically manipulate specific connections to these engram cells, a blue light-sensitive protein oChIEF was expressed in an upstream brain region, i.e., medial entorhinal cortical inputs (red) to the DG. The majority of DG granule cells were not active during engram labeling (blue, non-engram cells).
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