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有些基因与肿瘤的发展有关,其他基因则专一地促使癌细胞扩散到其他器官。一整套4个基因似乎对完成这两个过程都是必要的——
Some genes are involved in the development of the tumor, while others are specific to the proliferation of cancer cells to other organs. A full set of 4 genes seems necessary to accomplish both processes -