鳃丝角质层下的上皮细胞层比较薄，其近角质层侧细胞膜具有微绒毛。

In the filaments, the epithelium is a thin sheet, with a series of microvilli beneath the cuticle.

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鳃丝角质层下的上皮细胞层比较薄，其近角质层侧细胞膜具有微绒毛。

In the filaments, the epithelium is a thin sheet, with a series of microvilli beneath the cuticle.

youdao