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癌瘤细胞遗传变异的特征癌瘤乃是正常细胞“恶性变”的结果.一切遗传性的改变均涉及到细胞基因,其变异大致可分二类:Ⅰ细胞基因生理学的变异:①胚芽细胞突变②体细胞突变.Ⅱ细胞基因中由外来的附加遗传信息而致的变异:包括转型、携导、溶源性变异.第Ⅰ类的变异原则上只是对基因内部改变而言,即在基因内丧失了部分遗传信息或由于突变的结果.第Ⅱ类的变异是由一种带有附加遗传信息的遗传物
The characteristics of genetic mutations in cancer cells are the result of “malignant changes” in normal cells. All hereditary changes involve cell genes, and their mutations can be roughly divided into two categories: I cell genetic variability: 1 Germ cell mutation 2 Somatic mutations. II Variations in the cellular gene caused by extraneous additional genetic information: including transformation, introduction, and variability. Type I variation is in principle only for internal gene alterations, ie within genes. Loss of partial genetic information or as a result of a mutation. Type II variation is a genetic material with additional genetic information