In the striatum, the immunostaining data showed that the ratio of enhanced green fluorescent protein (EGFP)+-ChAT+ cells/ChAT+ cells was 88.94% ± 3.19%, and the ratio of EGFP+-ChAT+ cells/EGFP+ cells was 82.75% ± 2.42% (Fig. S3B and C), which indicated high infection efficiency. The gene discussed is CHAT; the disease is infection.