19. The vast diversity of immunoglobulin sequences is explained by:
(A) DNA rearrangement.
(B) large sections of DNA devoted to immunoglobulin formation.
(C) susceptibility of the immunoglobulin genes to mutation.
(D) sensitivity of formed immunoglobulin proteins to environmental factors.
(E) All of the above.
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1. 題目解析 本題探討的是免疫球蛋白...
阿摩線上測驗
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