Jacob Keller wrote:
I actually looked at an EtBr MSDS a while ago, and was shocked at how benign it was. I also heard from someone that they used to feed it to Argentinian cows routinely a few years back...
Wikipedia says it was used as a trypanosomacidal - It's being discontinued not because of toxicity to beast or man, but because of insufficient toxicity to trypanosomes- the little buggers are developing resistance. Of course resistance would develop earlier if EtBr is mutagenic. Maybe they overexpress DNA repair enzymes.
