CD8-expressing cells in post-stroke brain.

<p><b>(A–B)</b> Upper panel shows representative triple-labeled immunostaining of CD8+CD68+ cells expressing iNOS or Arg1 in the perilesional areas of the ischemic hemisphere at 6 h, and at days 1, 2, 3 and 4 after stroke. Lower panel shows quantification data. <b>(C)</b> Proportion of CD8+CD68+ cells expressing either Arg1 or iNOS at 4 d after stroke. Data in <i>A</i>–<i>C</i> is presented as average ± SEM. Scale bars represent 32 μm. * <i>P</i> < 0.05; ** <i>P</i> < 0.01; *** <i>P</i> < 0.001.