. 2013 Mar 25;46(1):19–31. doi: 10.5115/acb.2013.46.1.19
Copyright © 2013. Anatomy & Cell Biology
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.