. 2011 Aug 31;11(4):196–202. doi: 10.4110/in.2011.11.4.196
Copyright © 2011 The Korean Association of Immunologists
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.