問題詳情
49.tWhich description about complement system is incorrect?
(A)trequires antibody to target pathogen
(B)tcan attract phagocytic leukocyte
(C)tnormal body cells continuously produce proteins that inactivate complement
(D)tactivation of one complement protein can trigger the enzymatic cleavage of anotiier complement protein
(E)tis part of the innate immunity system
參考答案
答案：A
統計：A:1,B:0,C:2,D:0,E:0
難度：計算中