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Frequency of memory Th1 cells (A), cytotoxic T lymphocytes HLADR+CD38+ (B), cytotoxic T lymphocytes CD27−CD28− (C), and plasmablasts (D) in mild and severe patients. U-Mann–Whitney test was used to compare medians in A, B, C, and D. * p < 0.05 and ** p < 0.01.
