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. 2020 Sep 17;81(12):702–708. doi: 10.1016/j.humimm.2020.08.006

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© 2020 Published by Elsevier Inc. on behalf of American Society for Histocompatibility and Immunogenetics.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 1 — Cellularity of circulating T cells in COVID-19 patients. (A) Representative flow cytometry dot plots showing total T cells, CD4⁺ T cells, and CD8⁺ T cells in peripheral blood. Ctrl: healthy control. Mild: mild COVID-19 patients. Mild-Re: recovered mild COVID-19 patients. Severe: severe COVID-19 patients. Severe-Re: recovered severe COVID-19 patients. (B and C) Total T cell numbers (B) and proportions (C). (D and E) CD4⁺ T cell numbers (D) and proportions (E). (F and G) CD8⁺ T cell numbers (F) and proportions (G). ***, p < 0.001.