The peak level of Iba1+/BrdU+ cells was observed at day 7 (254.9 ± 17.15; Figure 3C), and the highest ratio of Iba1+/BrdU+ cells to Iba1+ cells was present at day 2 (21.55 ± 2.03%; Figure 3D), suggesting that microglia owed the fastest proliferation rate within the first week after striatal ischemia. The gene discussed is AIF1; the disease is ischemia.