http://reply.papertrans.cn/1/3/202/202-31.png
http://reply.papertrans.cn/1/3/202/202-32.png
http://reply.papertrans.cn/1/3/202/202-33.png
Submitted on: 23 December 2008.
Revised on: 05 March 2009.
Accepted on: 27 March 2009.
___________________ACS Chemical Biology---AMER CHEMICAL SOC
http://reply.papertrans.cn/1/3/202/202-35.png
http://reply.papertrans.cn/1/3/202/202-36.png