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The number of T lymphocyte subsets in COVID-19 patients at hospital admission. A Representative flow cytometry dot plots showing the gating strategy for T4 and T8 lymphocyte subsets. B The number of T4 lymphocyte subsets in 126 COVID-19 patients. C The number of T8 lymphocyte subsets in 126 COVID-19 patients. ns nonsignificant; *p < 0.05; **p < 0.01. Kruskal‒Wallis test for comparing the mean difference
