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目的：本试验是研究柴油机车排出的尾气颗粒，溶解在肺表面活性物质二棕榈酰卵磷脂（ＤＰＬ）溶液中，其提取物对中国仓鼠肺成纤维细胞（Ｖ７９细胞）ＤＮＡ的损伤和修复作用。并与溶解在二甲基亚砜（ＤＭＳＯ）中的柴油机尾气颗粒提取物对ＤＮＡ的损伤作一比较。方法：从柴油
OBJECTIVE: The purpose of this study was to investigate the effects of extract on the DNA damage and repair of Chinese hamster lung fibroblasts (V79 cells) by dissolving exhaust particles discharged from diesel locomotives in solution of pulmonary surfactant dipalmitoyl lecithin (DPL) . And compared with DNA damage of diesel exhaust particulate extract dissolved in dimethylsulfoxide (DMSO). Method: From diesel