n.子单元；亚单位；副族；亚组
Influenza may be prevented by active immunization with a polyvalent killed or subunit vaccine. 可以通过主动免疫接种多价灭活疫苗或亚单位疫苗预防流感。
The epitpes in capsid of FMDV play an important role in construction of a high immunogenic subunit vaccine. 口蹄疫病毒衣壳蛋白中的抗原表位是构建高免疫原性亚单位基因工程疫苗的基础。
