Dextran sulfate: replaced by PEG?

[Belhumeur Pierre]

Hi everybody,

I have heard many times that dextran sulfate could be replaced by PEG for 
nucleic acid hybridization...It's time once again to buy Dextran and I 
was wondering if anyone could comment on PEG. How efficient? Which PEG 
actually? 400? 20000??

Any input would be greatly appreciated!


Pierre Belhumeur
Microbiology
U. of Montreal
belhumep at ere.umontreal.ca