Comutagen

A comutagen is a substance that is not a mutagen by itself, but in the presence of a mutagen, enhances mutagenic activity.

[1] There are at least two manners by which this may occur; the comutagen may strengthen the mutagenic activity of mutagenic chemicals, or it can create a mutagenic response from nonmutagens.

[2] Chemicals such as harmane and norharmane (present in tobacco tar) have been identified as comutagens.

This biology article is a stub.

You can help Wikipedia by expanding it.