The expression of MPO of the stroke 1-day group was higher than that of the sham 1-day group (n = 7, p < 0.001), and the level in the stroke 7-day group was higher than that in the control group while lower than that in the stroke 1-day group (n = 7, p < 0.01; Figure 3(c)). Here, MPO is linked to stroke disorder.