silver stain

LAU Tze Chin tclau at
Mon Mar 18 22:08:56 EST 1996

I wonder if anyone has ever used benzene sulphonic acid to fix DNA
gels for silver staining. I've just come across this trick from 
Pharmacia's Phastgel dna silver stain kit manual. But, I am not sure
I should use the free acid or its sodium salt?? 

Can anyone suggest a few references on this. I have tried the medline but 
of no avail !!

Many thanks.


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