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  • Long-term hormone treatment increases synapses in rat prefrontal cortex

    University of Illinois psychology professor and Beckman Institute affiliate Janice Juraska, left, and doctoral student Nioka Chisholm found that long-term exposure to estrogen and a synthetic progesterone increased synapse numbers in the prefrontal cortex of aged rats.

    University of Illinois psychology professor and Beckman Institute affiliate Janice Juraska, left, and doctoral student Nioka Chisholm found that long-term exposure to estrogen and a synthetic progesterone increased synapse numbers in the prefrontal cortex of aged rats.

    Photo by L. Brian Stauffer

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      University of Illinois psychology professor and Beckman Institute affiliate Janice Juraska, left, and doctoral student Nioka Chisholm found that long-term exposure to estrogen and a synthetic progesterone increased synapse numbers in the prefrontal cortex of aged rats.

      Photo by L. Brian Stauffer

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      The researchers looked for a protein marker of synapses (black spots) in the prefrontal cortex, a brain region that governs many abilities known to decline with aging.

      Photo by Nioka Chisholm

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