Local T-cell response after hypoxic ischemic (HI) brain injury.

<p>(A) T-lymphocytes infiltrating injured (right) and uninjured (left) hemisphere, visualized by anti-CD3 immunohistochemistry. Ruler indicates 200 µm. (B) CD4⁺ (left) and CD8⁺ (right) T-lymphocyte infiltrating cells per 10⁶ live cells after HI brain injury (C) the expression of the naïvety marker CD45rb, and (D) the activation markers CD69 and CD25 in these populations. Open red circle = infarcted hemisphere, black triangle = uninjured hemisphere, blue square = sham operated and green filled circle = unoperated.