http://reply.papertrans.cn/3/234/23309/23309-31.png
Submitted on: 06 November 1999.
Revised on: 19 December 1999.
Accepted on: 28 December 1999.
npj Biofilms and Microbiomes---NATURE PORTFOLIO
http://reply.papertrans.cn/3/234/23309/23309-33.png
http://reply.papertrans.cn/3/234/23309/23309-34.png
http://reply.papertrans.cn/3/234/23309/23309-35.png
http://reply.papertrans.cn/3/234/23309/23309-36.png