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一肿瘤是正常细胞变异以后相继繁殖和生长的产物。细胞变异的关键在于细胞主要的内因——遗传物质发生了突变。这种改变可以反映在遗传物质分子(基因)水平上,也可以发生在染色质或染色体等大体结构变化上。从染色体量或质的变化方面,探索肿瘤
A tumor is the product of subsequent proliferation and growth after normal cell variation. The key to cell variability lies in the cell’s main internal cause—a genetic mutation. This change can be reflected in the level of the genetic material (gene), it can also occur in the general structural changes such as chromatin or chromosomes. Exploring tumors from changes in the amount or quality of chromosomes