. 2003 Nov 7;4:56. doi: 10.1186/1471-2105-4-56
Copyright © 2003 Pan et al; licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original URL.
Figure 1.
The system architecture.