The quantities of Iba-1+/IGF+ double-positive cells, together with the percentages of Iba-1+/IGF-1+ double-positive cells among the total Iba-1+ cells or IGF-1+ cells, respectively (4.40 ± 1.49/view field, 6.93 ± 3.61%, and 8.55 ± 3.62%), were all increased compared to those of the ischemia group (2.93 ± 2.08/view field, 5.34 ± 3.93%, and 6.60 ± 4.84%). Here, IGF1 is linked to ischemia.