What are the viruses associated with tumors?

As far as we know, there are two kinds of tumor-related viruses: one is called herpes virus, also called EB virus; One is called virus C, and Epstein-Barr virus-related tumors include Burkitt lymphoma, nasopharyngeal carcinoma and cervical cancer. The main basis is: ① the epidemiological history of EB virus infection; ② The titer of EB antibody in patients increased; ③ Nucleic acid fragments of EB virus can be found in tumor cells; ① Virus-associated antigens can be detected in patients' tissues; ⑤ Tumor cells can release EB virus; ⑥ Experiments show that EB virus can transform normal lymphocytes into smooth cells. Tumors related to C virus include leukemia, sarcoma and Hodgkin's disease. The main basis is to observe tumor cells and their passage cells under electron microscope, and typical budding C virus particles can be seen.