retrovirus

By targeting germ cells, these retroviruses became incorporated into human ancestral genomes over the course of millions of years and may have implications for how researchers screen and test for diseases today.

Despite this, dozens more clinical trials were conducted throughout the 1990s with retroviruses and other vectors, including adenovirus, a cause of the common cold.

For example, pig organs can contain retroviruses that lie dormant in genes.

At some point during evolution, the protein syncytin, which is essential for the formation of the placenta, came from a retrovirus infection.

He was part of the groundbreaking team that first discovered a retrovirus causes AIDS.

Instead of using a retrovirus (as Japanese scientists had done) that can cause cancer, they are using an adenovirus which is safe.