[1
]
College of Veterinary Medicine, Guangdong Provincial Key Laboratory of Veterinary
Pharmaceutics Development and Safety Evaluation, South China Agricultural University,
Guangzhou, China.
[2
]
Division of Infectious Diseases, University of Pittsburgh Medical Center, Pittsburgh,
PA, USA.
[3
]
College of Veterinary Medicine, Guangdong Provincial Key Laboratory of Veterinary
Pharmaceutics Development and Safety Evaluation, South China Agricultural University,
Guangzhou, China. Electronic address: jhliu@scau.edu.cn.