Developing a vaccine able to evoke a better cellular response than the body could mount on its own is a tall order. 想要发展某个疫苗，引起比身体自然反应还要好的细胞免疫反应，可是艰钜的任务。
Cellular and humoral immunological responses were involved in the process of chronic immunological rejection. 慢性免疫排异反应以细胞免疫为主。
