Isolation, identification, drug resistance and histopathology of Citrobacter freundii from bullfrog (Rana catesbeiana) in Guangxi

• XIAO Shuangyan, 
• WEI Dongdong, 
• LIU Mingzhu, 
• HUANG Jing, 
• YU Qing, 
• MENG Lanli, 
• LI Pengfei