Re: [Histonet] Sealing Paraffin Blocks

From:Lori Richey

We stopped sealing blocks a few years ago because of the time involved.  
The filing of the blocks was delayed because they were not sealed.  We 
have had no problems with preservation, as long as the tissue is fixed 
and not under processed.  They are stored off site in an archive storage 
facility, so I don't know of a mold or rodent problem.  All old blocks 
that we cut are in good condition. wrote:

>What is the current opinion and practice on sealing paraffin blocks prior 
>to filing/archiving them?  What is the pro and con in your opinion?
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