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Analysis of anti-inflammatory effects in the peri-infarct cortex at D21. (a), (b) Immunohistochemical staining at the peri-infarct cortex showed that the Iba-1-positive area in the young human mesenchymal stem cell (hMSC) group was significantly smaller than in controls or the old hMSC group (one-way ANOVA, Tukey–Kramer multiple comparison test, *P < 0.05, **P < 0.01). Data are presented as mean ± SD. Scale bar = 50 µm.
