论文部分内容阅读
近三十年来,许多学者对于肺癌的发病机制进行了许多研究,有着各种不同的见解,有人认为目前肺癌发病率的增长是由于近代化工业的飞跃发展,它所排出的废气污染了大气的结果,有人认为是由于现代化交通工具(如汽车等)的广泛使用,它所排出的废气污染了大气,亦有人认为是因吸烟过多而引起的,但是根据实验资料,目前对于肺癌的发病机制仍未得出一致的结论,也有学者认为肺癌发病率的增长是由于临床诊断技术进步的缘故。本文研究的目的是探讨某些常见的污染大气的废气是否有引起癌肿的作用,方法为用数种较常见的废气抽出物作动物(小白鼠)试验,由于不同种族的动物对于上述物质可能具有不同的感受性,故本试验所选用的小白鼠都系同一种族的,对于上述物质一般都较为敏感。受试验小白鼠分为五组(一组三十六只)每组分别用苯(作对照用)及柴油发动机废
In the past 30 years, many scholars have conducted many studies on the pathogenesis of lung cancer, and have various opinions. Some people think that the current increase in the incidence of lung cancer is due to the rapid development of modern chemical industry, and the exhaust gas it has emitted pollutes the atmosphere. As a result, some people think that due to the widespread use of modern means of transport (such as automobiles), the exhaust gas emitted by it has polluted the atmosphere, and some people think that it was caused by excessive smoking, but according to experimental data, the pathogenesis of lung cancer is currently Still not a consistent conclusion, some scholars believe that the increase in the incidence of lung cancer is due to the advancement of clinical diagnostic techniques. The purpose of this study is to investigate whether certain common atmospheric pollutants cause cancerous effects by using several more common exhaust extracts as animal (white mice) tests because of different ethnic animals for the above substances. With different susceptibility, the mice selected for this experiment are of the same race and are generally more sensitive to the above substances. The experimental mice were divided into five groups (a group of 36). Each group was treated with benzene (for comparison) and diesel engine waste.