论文部分内容阅读
已知烟草烟至少含有四种能在实验动物身上引起白血病的化学物质:氨基甲酸酯、亚硝胺、苯和放射性化合物,后两种对人体也有致癌作用。试验研究证实,每支纸烟含苯10～15μg,每天吸2包纸烟相当于吸进3mg苯。美国癌症协会(ACS)对吸烟与白血病的关系进行了两项大规模的前瞻性研究:癌症预防研究Ⅰ和癌症预防研究Ⅱ(CPS Ⅰ和CPS Ⅱ)。CPS Ⅰ于1959
Tobacco smoke is known to contain at least four chemicals that cause leukemia in laboratory animals: carbamates, nitrosamines, benzene, and radioactive compounds, the latter two also having an oncogenic effect on humans. Experimental study confirmed that each cigarette containing benzene 10 ~ 15μg, 2 packets of cigarettes per day suction is equivalent to inhalation of 3mg benzene. The American Cancer Society (ACS) conducted two large prospective studies on the relationship between smoking and leukemia: Cancer Prevention Study I and Cancer Prevention Study II (CPS I and CPS II). CPS Ⅰ in 1959