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【多选题】
关于 IgV 区,下述哪些是正确的?
A.
是由完整的轻链和 1 / 2 条重链组成
B.
具有与抗原特异性结合的功能
C.
是 Ig 超变区所在部位
D.
是 Ig 独特型抗原决定基所在部位
E.
编码 V 区的基因片段是 V - J - C
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A.
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B.
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C.
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D.
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