Figure 4. Fewer CD3-positive T-cells in TREM2-KO mice after stroke.

A. CD3-positive T-cells invaded the infarct core at 7 d and 28 d following stroke. Increased numbers of CD3-positive T-cells were visible in the infarct core 28 d after stroke in littermate controls, but not in TREM2-KO mice. Scale bar 50 µm. B. Fewer CD3-positive T-cells were detected 28 d after stroke in TREM2-KO mice compared to their littermate controls. Bars represent mean ± s.e.m, n = 3 each, WT ipsi vs. KO ipsi *p≤0.05.