Ethidium bromide

[Roland Hubner]

In article <3B54B528.27672.841F1E at localhost>, wolfsc at ibms.sinica.edu.tw 
("Wolfgang Schechinger") wrote:

> It's a little off topic, but recently I saw a paper from a Brasilian 
> group doing Ames' test with caffeine. It proved to be positive at 
> concenrtations we happily take in with our daily coffee...
> 
> cum grano salis
> 
> Wo

 No surprise (!/?) -- caffeine breaks chromosomes & the bacteria in the 
Ames test have no nuclear compartiment...

 I vaguely remember that caffeine was not considered worth a study by an 
US toxicology agency because it was a COMMON (natural?) food 
ingredient... 

Greetings,
 Roland