http://sciencenow.sciencemag.org/cgi/content/full/2008/1106/1
<p>The adult central nervous system has limited ability to repair itself. That’s why spinal cord injuries leave people permanently paralyzed. Now a study with mice finds that removing a particular signaling molecule in adult neurons restores their ability to regenerate damaged axons, the long extensions that convey signals from one neuron to another. The find potentially paves …</p>