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上个世纪80年代发现某些肿瘤细胞能产生一种刺激静止性生长的细胞呈非静止性生长的多肽因子,称为转化生长因子(T ransform ing grow th factor)。随后又观察到化学转化的小鼠AKP-2B细胞产生的TGF在功能上存在差异,由此将TGF分为TGFα-、TGF-β两种。已经证明TGF-α是一种多功能
In the 1980s, some tumor cells were found to produce a non-quiescent polypeptide factor that stimulates quiescent growth, called T-growth factor. It was further observed that TGFs produced by chemically transformed mouse AKP-2B cells differed in function, whereby TGFs were classified as both TGFα- and TGF-β. TGF-α has been shown to be multifunctional