. 2009 Apr 22;28(8):997–998. doi: 10.1038/emboj.2009.87
Copyright © 2009, European Molecular Biology Organization
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits distribution, and reproduction in any medium, provided the original author and source are credited. This license does not permit commercial exploitation or the creation of derivative works without specific permission.