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采用蚕豆根尖细胞微核试验，对南充市未精炼的菜油（ＵＲＳＯ）冷凝物进行了致突变性研究，结果表明：ＵＲＳＯ冷凝物有致突变性，在５０～２００μｇ／ｍｌ剂量范围内，观察到剂量增加致突变性增高的剂量－反应关系。
The mutagenicity of unconsolidated vegetable oil (URSO) condensate in Nanchong City was studied by using micronucleus test of Vicia faba root tip cells. The results showed that the mutagenicity of URSO condensate was mutagenic in the range of 50 ~ 200μg / ml Dose - Increased Mutagenicity - Increased Dose - Response Relationship.