目的：探讨增殖细胞核抗原(pcna)表达与甲状腺滤泡性肿瘤间的关系。

Objective: To study the relationship between the expression of proliferative cell nuclear antigen (PCNA) and follicular tumors of thyroid.

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多结节性甲状腺肿低倍镜图像。滤泡不规则增大，扁平上皮组织处于非增殖状态。

The follicles are irregularly enlarged, with flattened epithelium, consistent with inactivity, in this microscopic appearance at low power of a multinodular goiter.

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与健康动物相比，胸腺体积与重量增大4.5倍以上，脾脏滤泡增大1.5倍以上。以及淋巴结的淋巴小结扩大均为实质性增殖的结果。

In comparison with normal healthy animals, the size and weight of the thymus increased to over 45 times, follicles of the spleen enlarged more than 1.5 times.

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