BDNF and ischemia: SHED transplantation could increase the expression level of BDNF, the expression level of BDNF was increased the most in the SHED-hippocampus 2 × 105 and SHED-vein 2 × 106 groups compared with levels in the ischemia group (F(1, 4) = 144.90, P < 0.01; F(1, 4) = 28.96, P < 0.01) (Figures 3(c) and 3(d)), and there were significant differences between SHED-hippocampus 2 × 105 and SHED-vein 2 × 106 groups (F(1, 4) = 57.56, P < 0.01).