a
College of Chemistry and Chemical Engineering, School of Medicine, Jiangsu Key Lab of Zoonosis, Yangzhou University, Yangzhou 225002, P.R. China
E-mail: zjyang@yzu.edu.cn
;
Fax: +86 514 87975244
;
Tel: +86 514 87972034
b
Department of Nanoengineering, University of California-San Diego, La Jolla, USA