Chunliang Guo, Yaling Liao, Yan Li, Jun Duan, Ying Guo, Yuqian Wu, Yujun Cui, Hongwu Sun, Jinyong Zhang, Bing Chen*, Quanming Zou* and Gang Guo*
* Corresponding authors: Bing Chen chenbing3@medmail.com.cn - Quanming Zou qmzou@mail.tmmu.com.cn - Gang Guo guogang7001@163.com
BMC Microbiology 2011, 11:197 doi:10.1186/1471-2180-11-197