As shown in Figure 6, the apoptosis rate of rats in the MCAO+Netrin-1 group was 31.65 ± 1.55%, the percentage of cerebral infarction volume to the cerebral hemisphere in the MCAO group was 48.73 ± 3.74%, and the percentage of cerebral infarction volume to the cerebral hemisphere in the NS group was 7.82 ± 0.97%. This evidence concerns the gene NTN1 and brain infarction.