One is composed of columnar epithelial cells Waibanbixian a large number of lymphocytic infiltration, often the lymphoid follicles-like structure.

一种是在柱状上皮细胞组成的外分泌腺有大量淋巴细胞浸润，往往形成淋巴滤泡样结构。

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The structure and development of the peripheral lymphoid tissues of Silky fowl were investigated by light microscope.

在光镜水平上，以部分组织器官为对象，对乌骨鸡外周淋巴组织的发生和结构进行了研究。

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Bursa is the unique structure of the birds, is located at the top of the post-cloacal, the wall is full of lymphoid tissue.

法氏囊是鸟类特有的结构，位于泄殖腔后上方，囊壁充满淋巴组织。

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