该囊腔的内面被覆一层柱状上皮，其间夹杂有较多的杯状细胞。
The inner face of sack was covered with a sheet of columnar epithelium where some of goblet cell were found between the columnar epithelium.
中肠上皮细胞游离面具发达的微绒毛，前、后盲囊上皮细胞有柱状和杯状两种形态；
The free side of the epithelium cells of midgut was covered with abundant microvilli, and there were two types of cells in the epithelium of anterior and posterior midgut cecum;
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