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细胞内存在着某些蛋白质和细胞因子，它们对细胞的生长及分化起着重要的调节作用。这些物质的平衡和稳定是维持细胞正常形态和生理功能的重要因素。增殖细胞核抗原（ｐｒｏｌｉｆｅｒａｔｉｎｇｃｅｌｎｕｃｌｅａｒａｎｔｉｇｅｎ，ＰＣＮＡ）是存在于细胞核内的一种蛋白...
There are proteins and cytokines in cells, which play an important role in the regulation of cell growth and differentiation. The balance and stability of these substances are important factors in maintaining the normal morphology and physiological functions of cells. Proliferating cell nuclear antigen (PCNA) is a protein that is present in the nucleus...