Fig. 7

Lymphocyte infiltration persists in the brain of patients with ischemic stroke during delayed stage after onset. a Representative immunostaining images show CD4⁺ T, CD8⁺ T, and NK cells in brain perilesional area in an ischemic stroke patient. b Bar graph shows the quantification of CD4⁺ T, CD8⁺ T, and NK cells in controls and patients with ischemic stroke during later phases. n = 15 sections from five patients with ischemic stroke; n = 15 sections from five controls with non-neurological disease. Scale bars: 20 μm, 10 μm (inset). Error bars represent s.e.m.; **p < 0.01 sham vs. stroke patients by two-tailed unpaired Student’s t test