Submitted on: 19 July 2008.
Revised on: 09 August 2008.
Accepted on: 17 August 2008.
Stem Cell Research---ELSEVIER
Submitted on: 17 March 2009.
Revised on: 25 April 2009.
Accepted on: 04 May 2009.
Stem Cell Research
http://reply.papertrans.cn/3/287/28663/28663-33.png
http://reply.papertrans.cn/3/287/28663/28663-34.png
Submitted on: 21 September 1999.
Revised on: 20 October 1999.
Accepted on: 10 November 1999.
Stem Cell Research
http://reply.papertrans.cn/3/287/28663/28663-36.png