http://reply.papertrans.cn/1/50/4922/4922-31.png
Submitted on: 04 June 1999.
Revised on: 21 September 1999.
Accepted on: 28 October 1999.
___________________Cell Division---BMC
http://reply.papertrans.cn/1/50/4922/4922-33.png
http://reply.papertrans.cn/1/50/4922/4922-34.png
Submitted on: 16 November 2005.
Revised on: 15 January 2006.
Accepted on: 29 January 2006.
___________________Cell Division---BMC
http://reply.papertrans.cn/1/50/4922/4922-36.png