AUTHOR=Guo Yu , Cheng Jing , Zhang Shuai , Zhang Yuanyuan , Zuo Yuzhu , Liu Tao , Wang Yun , Yang Chun , Cheng Chunjie , Fan Jinghui , Jiang Haijun TITLE=Recombinant avian metapneumovirus subtype C expressing HA protein of H9N2 avian influenza virus are stable and induce protection JOURNAL=Frontiers in Microbiology VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2024.1513474 DOI=10.3389/fmicb.2024.1513474 ISSN=1664-302X