AIF1 and hematoma: The number of total microglia/macrophages (Iba-1-positive) cells in the hemorrhagic brain also significantly increased compared with the sham group (38.8 ± 2.2 cells/field) in the peri-hematoma area at both 4 days (69.2 ± 1.6 cells/field) and 7 days (87.9 ± 3.7 cells/field; Fig. 6b).