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.
- The rise of college 'study drugs'
- 3-D printing the human body
- Apathy in older folks could signal shrinking brain
- Casual marijuana use may damage your brain
- Obesity during pregnancy raises stillbirth risk
- Fussy infants and toddlers watch more TV
- Herbal remedy may improve arthritis symptoms
- Report: E-cigarettes appealing to kids
- She found love, left sugar and lost weight
- Sebelius' resignation and the politics of health law