In a technological breakthrough, two groups have shown that it is possible to study the turnover of spines — tiny protrusions on nerve cells — in live mice. But it's still uncertain just how dynamic the spines are.
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Ottersen, O., Helm, P. How hardwired is the brain?. Nature 420, 751–752 (2002). https://doi.org/10.1038/420751a
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DOI: https://doi.org/10.1038/420751a
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