Presence of double-positive CD4⁺CD8⁺ T-cells after hypoxic ischemic brain injury.

<p>(A) CD4⁺ and CD8⁺ T-lymphocytes in unoperated age matched control (left) and damaged brain hemisphere (right) two weeks after HI. Note the double positive population marked in red. (B) Proportion CD4⁺CD8⁺ double positive T-lymphocytes in brain and (C) spleen after HI. Red circle = infarcted hemisphere (B) or HI (C), black triangle = uninjured hemisphere, blue diamond = sham operated, and green square = unoperated.