There have been many recent research findings on using viruses for the treatment of cancer. This Betterhumans article is especially interesting because it describes an experimental treatment based on a naturally occurring virus rather than an engineered one. So perhaps there is a naturally evolved mechanism to keep cancer in check. Perhaps one of the causes of the rise of cancer cases in the second half of the 20th century is that the progress of medicine has made the work of cancer…
Source: http://www.transhumanism.com/news_comments.php?id=1096_0_2_0_C