2. What causes a differentiating B cell to become committed to producing only one species of antibody molecule?
(A) DNA rearrangements in the genome
(B) RNA rearrangements in the genome
(C) protein rearrangements in the genome
(D) DNA rearrangements in the mitochondria
(E) RNA rearrangements in the mitochondria
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1. 題目解析 這道題目詢問的是一個分...
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