题目内容
关于牙周膜,错误的叙述是
2022-02-21
A.牙周膜的厚度为0.15-0.38mm
B.在根中1/3处最厚
C.纤维丰富,常排列成纤维柬
D.由致密的结缔组织构成
E.细胞以成纤维细跑为主
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