单选题:具有引产作用,临床用于中止妊娠引产,并可用于治疗恶性葡萄胎成分为(  )

题目内容:
具有引产作用,临床用于中止妊娠引产,并可用于治疗恶性葡萄胎成分为(  ) A.天花粉蛋门
B.半夏蛋白
C.银耳多糖
D.香菇多糖
E.昆布素
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