皮皮学，免费搜题
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【单选题】
组成表皮的细胞为哪两类?A.
角质形成细胞和黑素细胞
B.
非角质形成细胞与朗格汉斯细胞
C.
角质形成细胞与非角质形成细胞
D.
非角质形成细胞与细胞
E.
朗格汉斯细胞与细胞
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B.
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