In addition to chemicals and radiation, a few viruses also can trigger the development of cancer. In general, viruses are small infectious agents that cannot reproduce on their own, but instead enter into living cells and cause the infected cell to produce more copies of the virus. Like cells, viruses store their genetic instructions in large molecules called nucleic acids. In the case of cancer viruses, some of the viral genetic information carried in these nucleic acids is inserted into the chromosomes of the infected cell, and this causes the cell to become malignant.
- Ebola outbreak in West Africa is deadliest ever
- Medicare's outlook improves as health spending slows
- Bill would legalize some cannabis strains
- Second American infected with Ebola
- Ebola virus reaches Lagos, Nigeria
- This won't be the AIDS-free generation
- 5 studies you may have missed
- CDC lab resumes shipping of TB samples
- Man claims his penis was mistakenly amputated
- Ebola outbreak: Time to test vaccines?