AUTHOR=An Hui , Li Ting , Zhang Xinyue , Hu Hao , Zhang Chen , Wang Yongyu , Jin Shengwei , Li Ming TITLE=Persistent CD19+ B cell lymphopenia in critically ill COVID-19 patients 50 days after symptom onset JOURNAL=Frontiers in Cellular and Infection Microbiology VOLUME=14 YEAR=2024 URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2024.1488607 DOI=10.3389/fcimb.2024.1488607 ISSN=2235-2988