研究方法:1、采用MTT试验观察NaNO2对体外培养的中国仓鼠肺细胞（Chinese hamster lung cells,CHL cells）的细胞毒性作用,确定其最大无作用剂量（no observed active effect lever...
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CHL cells were bought from National Safety and Evaluation Center of the New Drug (Shenyang).
CHL细胞引自国家沈阳新药安全评价研究中心。
Results The normal CHL cells displayed bright punctuate labeling and formed dashes, at regions of intercellular contact.
结果正常对照组相邻细胞连接处有明亮的斑片状标记，聚集分布连接成线；
Objective To detect the DNA strand breaks induced by adriamycin, potassium chromate or hydrogen peroxide and to study the effect ofp tyrosol on DNA oxidative damage in CHL cells.
目的检测阿霉素、重铬酸钾和过氧化氢所致中国仓鼠肺成纤维细胞（CHL）DNA的损伤效应及酪醇对真核细胞DNA氧化损伤的保护作用。
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