Epithelial tissue is the pseudostratified ciliated columnar epithelium, more Fabricius nodes are located in the natural layer.
黏膜上皮全部为假复层柱状上皮，黏膜的固有膜内腔上囊小结也相对发达。
Epithelial tissue is the pseudostratified ciliated columnar epithelium, more Fabricius nodes are located in the natural layer.
黏膜上皮全部为假复层柱状上皮，黏膜的固有膜内腔上囊小结也相对发达。
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