Multiple choice

An oncovirus is a group of viruses that causes cancers in birds and mammals. Which of the following is the first described oncovirus?

  1. Koala retrovirus

  2. Rous sarcoma virus

  3. Avian sarcoma leukosis virus

  4. Visna virus

  5. Bovine immunodeficiency virus

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rous sarcoma virus is a retrovirus and is the first oncovirus to have been described. It causes sarcoma in chickens.