occupational exposure toxicant 职业性接触毒物
Subjects: (1)Approaching about hereditable toxicant effect on the occupational workers exposed to low-dose TCE within long term ;
目的：（1）探讨低剂量三氯乙烯（TCE）对长期职业接触工人的遗传毒作用；
Objective to explore the effects of interaction between environmental exposure factors and genetic polymorphism in toxicant metabolizing enzymes on risk of occupational chronic benzene poisoning.
目的研究环境暴露因素与毒物代谢酶基因多态性对发生慢性苯中毒危险性的影响。
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