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The proportions and numbers of CD4+CD25high T cells in haemorrhagic fever with renal syndrome (HFRS). (a,b) The proportions and numbers of CD4+CD25high T cells in the acute phase of illness between days 2 and 12 (mean 10 days) after the onset of HFRS were not different. (c,d) The proportions and numbers of CD4+CD25high T cells were increased significantly in HFRS2.
