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TGFβ是具有同源双链的活性多肽,广泛存在于动物体多种组织和细胞内，是细胞的多功能调节因子，促进细胞增殖的信号传递，也可抑制细胞的增殖，并调节细胞外基质形成。同时在防止肝细胞的过度增生中起重要的调节作用。
TGFβ is a homologous double-stranded polypeptide, which is widely existed in various tissues and cells of animals. It is a multi-function regulator of cells, promotes the signal of cell proliferation, inhibits the proliferation of cells and regulates extracellular matrix form. At the same time in the prevention of excessive proliferation of hepatocytes plays an important regulatory role.