立方形间皮细胞常伸出瓣膜状胞质突起，使腹膜下小管呈蜿蜒曲折状。

The cuboidal cells often extend valve-like cytoplasmic processes which give the channels a tortuous course.

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而毒腺则是由立方形分泌细胞形成的单细胞层，和平行于内腔，贴近内膜的单层鳞状细胞层共同构成。

And the gland filaments consist of a single layer of cuboidal secretory cells and an inner layer of squamous cells adjacent to the intima which lines the lumen.

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而毒腺则是由立方形分泌细胞形成的单细胞层，和平行于内腔，贴近内膜的单层鳞状细胞层共同构成。

And the gland filaments consist of a single layer of cuboidal secretory cells and an inner layer of squamous cells adjacent to the intima which lines the lumen.

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