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病毒作为肿瘤的病因,在动物已有充分的证明,在人尚未得到确认。到目前为止,已发现约有200个不同的病毒可引起不同种类动物的肿瘤。通过对这些动物肿瘤的研究,(1)了解了细胞转化及癌变的机理,如化学、物理、激素、免疫抑制、病毒等因素会影响细胞的控制,促进细胞的转化。Seemayer等将地鼠肾细胞先用致癌的多环碳氢化合物或城市烟雾的提取物处理,然后用SV_(40)感染,
The cause of the virus as a tumor has been well documented in animals and has not yet been confirmed in humans. So far, about 200 different viruses have been found to cause tumors in different kinds of animals. Through the study of these animal tumors, (1) understand the mechanism of cell transformation and carcinogenesis, such as chemistry, physics, hormones, immunosuppression, viruses and other factors will affect the control of cells and promote cell transformation. Seemayer and other hamster kidney cells first with carcinogenic polycyclic hydrocarbons or urban smoke extract treatment, and then with SV_ (40) infection,