問題詳情
31. What is passive immunity dependent upon?
(A) a person's own immune system producing antibodies
(B) antibodies made by another organism
(C) antibody-producing cells from another organism
(D) antigens from a person's own body
(E) antigen stimulates antibody production
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增