题目内容
结合上皮的特点是
2021-11-16
A.成熟的高分化上皮
B.正常时有角化,有钉突
C.高尔基体、粗面内质网和线粒体少
D.细胞排列紧密,细胞外间隙小
E.形成许多半桥粒,使牙銀与牙面结合
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