The hippocampus is an area within the brain crucial for learning and memory, and it is one of the very few sites where new neurons grow in adulthood. In this slice of a hippocampus, stem cells (green) give rise to new neuronal cells (red). Understanding how the brain produces new neurons could help in treatments for Alzheimer’s and Parkinson’s diseases, to name just a couple.
Image credit: Grigori Enikolopov
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