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【单选题】
以下哪一个是宿主控制抗原性的例子A.
蛋白比多糖抗原性强
B.
动物不会对自身血液中的蛋白产生抗体
C.
半抗原可以给抗原增加新的表位
D.
有些抗原同时有构型性和线性表位存在
E.
以上都对
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举一反三
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A.
rings once and then is quiet.
B.
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C.
stops you from doing your work for a while.
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D.
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