Any suggestions for storing frozen sections? I made many sections ahead of 
time to avoid multiple freeze thaw cycles of my blocks and the consequential 
degradation of RNA from thawing. However the sections are developing ice 
crystals covering the slides, not sure if the ice will harm the sections or 
the RNA. I have them in a microslide box, in a tuperware container at -80 
degrees. I recently added some drierite to the tuperware container, 
hopefully that will help. What do other people do to store frozen slides?

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