Some viruses, known as oncoviruses, contribute to certain forms of cancer; the best studied example is the association between Human papillomavirus and cervical cancer: it is now acknowledged that almost all cases of cervical cancer are caused by certain strains of this sexually transmitted virus.
Some viruses contribute to certain forms of cancer. Some viruses are known as oncoviruses. The best studied example is the association between Human papillomavirus. The best studied example is the association between cervical cancer. Almost all cases of cervical cancer are caused by certain strains of this sexually transmitted virus. This was what it is now acknowledged.