NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,032 terms related to cancer and medicine.
- listen (REH-troh-VY-rus)
- A type of virus that has RNA instead of DNA as its genetic material. It uses an enzyme called reverse transcriptase to become part of the host cells’ DNA. This allows many copies of the virus to be made in the host cells. The virus that causes AIDS, the human immunodeficiency virus (HIV), is a type of retrovirus.