試題詳解

64. Which of the following statements regarding circulating immunoglobulins is correct?
(1) They are produced by B-cell-derived plasma cells.
(2) Their diversity is generated by gene rearrangements in the developing B cells.
(3) Each immunoglobulin producing cell generates only one kind of immunoglobulins.
(A)(1) and (2)
(B) (1) and (3)
(C) (2) and (3)
(D) None of the above is correct
(E) All of the above are correct