1. Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, P. R. China
2. Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
3. Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center, Shreveport, LA, USA
4. Department of Chemistry and Physics, Louisiana State University, Shreveport, LA, USA