Strong contamination with ethidium bromide

[WS]

> Bruce Ames showed in a PNAS paper in the seventies that smoking is more
> mutagenic than ethidum bromide (using fairly realistic doses of both).
>

You probably mean

http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pubmed&pubmedid=4577135

It's a (the?) description of the Ames' test.

EtBr is mentioned therein, but I couldn't find anything on smoking.

Wo