[Histonet] re: microns on frozen sections of lung
Stephen Peters M.D.
petepath <@t> yahoo.com
Mon Apr 4 10:29:04 CDT 2005
Lung tends to be a bit on the watery side. If there is pulmonaty edema it will be
very watery and suseptable to freeze artefact which can make it seem like its full of
holes. The more water a tissue has the warmer I cut them. I will often start trimming at at
temp that is just starts to cut in a flat sheet without crumpling. As the block continues to
cool on the chuck the tissue comes to the temp where it starts to cut just right.
With my system we have small steel blocks that you can press to the face of the block
cool it further it in small incerments if needed ( without freezing it too hard with a spray)
Make sure your crostat is set up properly ( blade angle ect) and above all start with a
sharp blade. If you want to make sure your problems are do to the tissue and not
something wrong with the cryostat, make a block of only OCT and try cutting it. It should
cut very easily.
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