試題詳解

70. Which of the following statements about immunoglobulin is FALSE?
(A) IgG is the most abundant immunoglobulin in serum.
(B) IgM can activate classical complement pathway.
(C) IgE can induce mast cell degranulation.
(D) IgG is the first immunoglobulin class produced in a primary response to an antigen.
(E) IgA is the predominant immunoglobulin class in external secretions such as breast milk, saliva and tears.