Monkey brains. Confocal light micrographs of sections through a monkey brain, showing the activation of a new neuron (yellow). This study was done as

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Monkey brains. Confocal light micrographs of sections through a monkey brain, showing the activation of a new neuron (yellow). This study was done as part of research into stem cells. Stem cells are cells that differentiate to form a range of different tissues. The most potent stem cells are found in embryos, but stem cells are also found in adult tissue. It is thought that new brain cells can be made from a small source of stem cells in adult brains. This technique is being studied to treat brain disorders. This work was done in 2001 at the Stem Cells Research Institute (SCRI) in Milan, Italy.

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Photo credit: © PASQUALE SORRENTINO/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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