prevent EtBr from moving

[Peter Ellis]

muffco at hotmail.com wrote:
>Thank You for the replies!
>One suggestion seems very convenient an reliable to me:  adding EtBr
>into the running buffer.

I don't see why that helps in the slightest - if anything the EtBr will 
be *more* mobile in the running buffer than in the gel, and will simply 
run to one end of the tank.  You won't get even staining with this 
method either

Seriously, take the extra 15 minutes and stain your gel after running 
it.

Peter