rna at -40 to -80 ?

suter at VAX.MPIZ-KOELN.mpg.d400.de suter at VAX.MPIZ-KOELN.mpg.d400.de
Tue Jun 8 16:23:02 EST 1993

why is it that everybody wants to store there rna at -80 ? in my opinion,
diffusion is reduced to zero at -20, and therefore rnases won't be very active at
that temperature. 
i store all nucleic acids at -20: i have never noticed any drop in quality.
repeated freezing and thawing will damage nucleic acids much more; that
is because of the presence of nucleases, but also because of the physical
forces and chemically instability during these two processes.


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