CJCP     2020 22 (10):  1119-1124    ISSN: 1008-8830  CN: 43-1301/R Association of age distribution with the expression of angiotensin-converting enzyme 2 in lung tissues in severe acute respiratory syndrome coronavirus 2 infection: reflections from the study of RAS pathway expression in mice LOU Li-Li, XIE Liang, HU Yu, CHEN Li-Na, LIANG Ping, SHI Fang, LIU Cai-Jun, LIU Han-Min Department of Pediatric Respiratory Immunology, West China Second University Hospital, Sichuan University, Chengdu 610041, China Received: 2020-05-09  Revised: 2020-09-03  Online: null Supporting info