Objective: To study the expression of proliferating cell nuclear antigen (PCNA) in islet cell tumor and its significance.

目的：探讨胰岛细胞肿瘤增殖细胞核抗原(pcna)表达与形态学特征的关系。

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Objective To investigate the expression of proliferating cell nuclear antigen (PCNA) in colorectal adenoma-carcinoma sequence.

目的探讨增殖细胞核抗原(pcna)在结直肠腺瘤-癌序列中的表达变化。

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Proliferating cell nuclear antigen (PCNA) is the kernel component of replication complex of eukaryotic organism, and needed for DNA synthesis.

增殖细胞核抗原(pcna)是真核生物复制复合体的核心成分，为DNA合成所必需。

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