Genetic and Evolutionary of M and ORF3 Genes of Porcine Epidemic Diarrhea Virus in Part Areas of Yunnan Province

• RAN Liyan, 
• ZHAO Xiao, 
• ZHANG Mei, 
• ZHANG Wen, 
• ZHU Peiying, 
• LUO Linbao, 
• LI Wengui, 
• PENG Jie