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. 2020 Jun 20;218:108516. doi: 10.1016/j.clim.2020.108516

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© 2020 Published by Elsevier Inc.

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. 2 — The activation status of CD8⁺ T cells in COVID-19 patients. (A) The expression of CD38 and HLA-DR on CD8⁺ T cells of COVID-19 patients was significantly increased as compared with HCs. (B) The expression of CD38 and HLA-DR on CD8⁺ T cells was not significantly different among the severity of the disease.