RE: EM sample prep
Kim, I assume they are going to run the slide like an EM sample and then put
their molds right over the areas of interest. Morpholgy of a paraffin
sections won't be much different than a frozen section when viewed by EM -
the paraffin makes huge holes in the tissue when seen at the EM level. What
may make a difference in your immuno staining is the fixation before you
stain. Is your antigen likely to diffuse on a cryostat section?
From: Kimberly L Merriam [mailto:email@example.com]
Sent: Thursday, August 23, 2001 5:18 PM
Subject: EM sample prep
I have been asked to prepare IHC-stained slides for EM.
What I was told to do (by the EM lab we are working with) is
to stain cryostat sections with my antibodies (a directly
biotinylated primary and immunogold secondary), then
post-fix them in glutaraldehyde/sodium cacodylate fixative
and send them to the EM lab for further processing.
Here are my questions: Do these samples need to be cryostat
or can I do this with paraffin? Wouldn't paraffin-embedded
samples have better morphology?
I have never done any type of EM, so I am clueless!
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