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Contact: Robert Sanders
University of California - Berkeley
Caption: Myelin is stained blue in this cross section of a rat hippocampus. Myelin, which speeds electrical signals flowing through axons, is produced by oligodendrocytes, which increase in number as a result of chronic stress. New oligodendrocytes are shown in yellow.
Credit: Image by Aaron Friedman and Daniela Kaufer, UC Berkeley.
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Related news release: New evidence shows how chronic stress predisposes brain to mental disorders