Crohn病常累及肠壁A.全层 B.黏膜层 C.黏膜层及黏膜下层 D.肌层

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问题 Crohn病常累及肠壁A.全层B.黏膜层C.黏膜层及黏膜下层D.肌层

选项 A.全层
B.黏膜层
C.黏膜层及黏膜下层
D.肌层

答案 A

解析
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