試題詳解

10. What is the correct sequence in which the following occur during a primary humoral immune response?   1. helper T cell activation； 2. B cell activation； 3. plasma cell differentiation and proliferation； 4. antibody secretion； 5. presentation of antigen on class II MHC proteins
(A) 5,2,1,4,3
(B) 4,5,2,1,3
(C) 4,5,3,1,2
(D) 5,2,1, 3, 4
(E) 5,1,2,3,4