A case-control study was performed to assess whether T-cell activation profile of CD8+ T-cells is associated with unexplained recurrent abortion. Women with abortion had significantly higher percentages (32 +/- 11 vs. 24 +/- 13%) and absolute numbers (160 +/- 78 vs. 114 +/- 83 cells/mm(3)) of CD8+DR+ T-cells than controls.

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