Conclusion As an adjuvant, IL-4 DNA can improve the protective effect of cathepsin B DNA vaccine in mice against S. japonicum infection.

• 结论 重组IL-4 能提高日本血吸虫组织蛋白酶B 核酸疫苗的抗血吸虫保护力作用，具有佐剂的免疫效应。