Mutations of 127, 183 and 212 residues on the HA globular head affect the antigenicity, replication and pathogenicity of H9N2 avian influenza virus. - Fan, Menglu; Liang, Bing; Zhao, Yongzhen; Zhang, Yaping; Liu, Qingzheng; Tian, Miao; Zheng, Yiqing; Xia, Huizhi; Suzuki, Yasuo; Chen, Hualan; Ping, Jihui (Transboundary & Emerging Diseases, 2022)