. 2013 May 31;8:140. doi: 10.1186/1749-8090-8-140
Copyright © 2013 El Arid et al.; licensee BioMed Central Ltd.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Schematic of the experimental model.