Submitted on: 18 October 1999.
Revised on: 10 November 1999.
Accepted on: 04 January 2000.
___________________Journal of Toxicologic Pathology
http://reply.papertrans.cn/2/200/19946/19946-12.png
http://reply.papertrans.cn/2/200/19946/19946-13.png
Submitted on: 31 July 2003.
Revised on: 31 October 2003.
Accepted on: 25 December 2003.
___________________Journal of Toxicologic Pathology
http://reply.papertrans.cn/2/200/19946/19946-15.png
http://reply.papertrans.cn/2/200/19946/19946-16.png
Submitted on: 02 December 2014.
Revised on: 16 January 2015.
Accepted on: 14 February 2015.
___________________Journal of Toxicologic Pathology
http://reply.papertrans.cn/2/200/19946/19946-18.png
http://reply.papertrans.cn/2/200/19946/19946-19.png
http://reply.papertrans.cn/2/200/19946/19946-20.png