Viral dmg3/11/2023 ![]() ![]() They are called papillomaviruses because some of them cause papillomas, which are more commonly known as warts. Human papillomaviruses (HPVs) are a group of more than 150 related viruses. But these vaccines can only protect against infections if they are given before the person is exposed to the cancer-promoting virus. Our growing knowledge of the role of viruses as a cause of cancer has led to the development of vaccines to help prevent certain human cancers. Several viruses are linked with cancer in humans. (For example, the viruses that cause the common cold only infect the cells lining the nose and throat.) ![]() In general, each type of virus tends to infect only a certain type of cell in the body. When the DNA or RNA affects the host cell’s genes, it can push the cell toward becoming cancer. Some viruses do this by inserting their own DNA (or RNA) into that of the host cell. A virus must enter a living cell and take over the cell’s machinery in order to reproduce and make more viruses. They are made up of a small number of genes in the form of DNA or RNA surrounded by a protein coating. Viruses are very small organisms most can’t even be seen with an ordinary microscope.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |