Aged Mice are More Resistant to Influenza Virus Infection due to Reduced Inflammation and Lung Pathology Lu Jiao 1, 2 ;Duan Xuefeng 1 ;Zhao Wenming 1 ;Wang Jing 1, 2 ;Wang Haoyu 3, 1 ;Zhou Kai 1 ;Fang Min 1, 4 ; 1 CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. ; 2 University of Chinese Academy of Sciences, Beijing, China ; 3 Institute of Health Sciences, Anhui University, Hefei, China ; 4 International College, University of Chinese Academy of Sciences, Beijing, China ; Figure 3. Neutrophils and DC cell percentage increased in the young mice but not in the aged mice after infection. Young and aged B6 mice were infected i.n. with 1#cod#x000D7;10 3 PFU PR8 virus. A Gating strategy of cell populations. The cells were firstly gated on myeloid cells. Alveolar macrophages were CD11b lowmid CD11c + , we also confirmed that all the cells were F480 + ; DC cells were CD11b high CD11c + ; neutrophils were CD11b + CD11c - Gr1 + . B Percentage of the indicated cells before and after IAV infection. Data are representative of two similar experiments with 3-5 mice per group in each experiment. Data points indicate means #cod#x000B1; SD. #cod#x0002A; p 0.05, #cod#x0002A;#cod#x0002A; p 0.01. null,null,0(0),null-null. Doi:10.14336/AD.2017.0701