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Immunological profile of the hemodialysis (HD) patients under COVID-19 infection. (a) The frequency of lymphocytes in the PBMCs of patients with or without COVID-19. The proportion of T cells, CD4+ T cells, CD8+ T cells, and B cells of HD patients with or without COVID-19, non-HD COVID-19 patients, or healthy volunteers. (b) The serum levels of cytokines in indicated patients. IFN, interferon; IL, interleukin; TNF, tumor necrosis factor.
