複選題
26. For a viral subunit vaccine to be effective, ______ (Select all that apply.)
(A) T cells must be first activated
(B) neutralizing antibodies must be induced
(C) germinal centers must be formed
(D) NK cells must be activated
(E) it must be derived from viral surface components.
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統計: 尚無統計資料
統計: 尚無統計資料