Re: [Histonet] Dry tissue

From:Rene J Buesa (by way of histonet)

If nothing has changed in your processing routine then you should look at
the biopsies and how they are collected. Once we had a similar problem and
it turned out that the biopsies were not fixed immediately they were
collected (they dried out before being fixed).
Also, are the same fixative as before being used?
Have you had any changes in the reagents suppliers?
Additionally all our "dryness" problems were eliminated when we start using
a mixture of ethanol/isopropanol/mineral oil which allowed us to start
dehydration/infiltration steps at a time ratio of 4.8:1 with relation with
the initial dehydration.
Just a thought!
Rene J.

"Webb, Dorothy L"  wrote:
I thought I knew most of the processing answers when hit with
problematic tissues to cut, but, lately, I am stymied!! Lately, our
smaller biopsies have been very dry and nothing has changed in our
processing routine or reagents. I did lessen the times in absolute a
little and also let the time in xylene be lessened. I am not seeing the
change I thought I would. Can anyone give me any suggestions as to how
to process small biopsies in the same processor with large specimens
without drying out the small GI biopsies and still getting the proper
processing on large speicmens. Thanks ahead of time for responding to
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