vaccinogen

例句：

1. 1.The vaccine antigen is a critical component ofthe immune response.
   疫苗抗原是免疫系统反应的关键成分。
2. 2. The study focused on the antigenicity of the new vaccine.
   该研究专注于新型疫苗的抗原性。
3. 3. The researcher found that the vaccineantigen was effective in preventing thedisease.
   研究者发现，疫苗抗原在预防该疾病方面是有效的。