As shown in Figures 2(a) and 2(b), the volume of cerebral infarction in the DKK1 group was significantly lower than that in the model group (P < 0.01), and the volume of cerebral infarction in the AC + DKK1 group increased compared with that in the DKK1 group (P < 0.05) on day 7. The gene discussed is DKK1; the disease is brain infarction.