A.1~2g/L B.2~4g/L C.4~6g/L D.<1g/L E.>6g/L
A.2 B.3 C.5 D.12 E.15
A.人工主動免疫 B.人工被動免疫 C.自然主動免疫 D.自然被動免疫 E.非特異性免疫