关于肿瘤的病因,有病毒、遗传、致癌化学物质、激素、放射等等学说。三个世纪前即有人提出系由一种可以传播的致病因子所引起的假说,近20年来,由于采用了新技术及临床、基础学科的共同努力,取得了较大的进展。许多动物肿瘤已被证明由病毒引起,人类肿瘤由病毒引起的证据也越来越多,并日益被人们所重视。 On the cause of the tumor, there are viruses, hereditary, carcinogenic chemicals, hormones, radiation and so on. It was suggested some three centuries ago that the hypothesis stemmed from a pathogenic factor that can spread. In the past 20 years, great progress has been made thanks to the joint efforts of new technologies and clinical and basic disciplines. Many animal tumors have been proven to be caused by viruses. Evidence of human tumors caused by viruses is also increasing, and people are paying more and more attention.