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据估计世界上现在大约有63000种化学物质在使用,而且每年又大约有6000～10000种新的化学物质被合成,这些化学物质可通过各种途径进入人类环境,因此环境化学性污染与肿瘤的关系已引起日益严重的注意。肿瘤的发生机制目前流行着遗传性机制(Genetic mechanism)和外遗传性机制(Epigenetic mechanism)两种学说。遗传性机制认为,正常细胞转变成肿瘤细胞,是由于基因组的改变,这不仅是因为细胞
It is estimated that there are currently about 63000 kinds of chemical substances used in the world, and about 6,000 to 10,000 kinds of new chemical substances are synthesized each year. These chemicals can enter the human environment through various channels. Therefore, environmental chemical pollution and tumor The relationship has drawn increasingly serious attention. The mechanism of tumor is currently prevailing genetic and genetic mechanisms (Epigenetic mechanism) two doctrines. Genetic mechanisms that the normal cells into tumor cells, is due to genome changes, not only because the cells