论文部分内容阅读
过去几十年内人类恶性肿物的发病率普遍有所增加,这与以下几种因素有关:1)检测恶性肿物的诊断筛选方法得到改进,2)发现并发展了治疗传染性和其他疾病的新的更有效的抗菌素以及化疗药物,致使年青人的死亡率降低,因此,平均寿命有所延长,从而使老年人口中癌的发生率上升,3)工业的和其他致癌物的环境污染增加,诸如新工厂、汽车和化学实验室等。至今至少已经证实有一千种以上致癌化合物能有效地诱导人类肿瘤的发生,特别是居住在工业区的人群。
The incidence of malignant tumors in humans has generally increased over the past few decades. This is related to the following factors: 1) Improvement in diagnostic screening methods for detecting malignant tumors, 2) Discovery and development of treatments for infectious and other diseases New and more effective antibiotics and chemotherapeutics have resulted in lower mortality rates among young people. As a result, the average life expectancy has been extended, resulting in an increase in the incidence of cancer in the elderly population. 3) Increased environmental pollution from industrial and other carcinogens. Such as new factories, cars and chemical laboratories. To date, it has been confirmed that more than one thousand carcinogenic compounds can effectively induce the occurrence of human tumors, especially those living in industrial areas.