RE: [Histonet] Immuno Artifact?

From:"Smith, Allen"

It looks to me like the sort of air bubbles one gets when the tissue starts
to dry before the coverslip is lowered into place.  I suspect that toluene
is the source of your problem: toluene dries much faster than xylene.

Allen A. Smith, Ph.D.
Professor of Anatomy
Barry University
School of Graduate Medical Sciences
            Podiatric Medicine and Surgery
Miami Shores, Florida

-----Original Message-----
[] On Behalf Of jason m
Sent: Monday, November 08, 2004 11:47 AM
Subject: [Histonet] Immuno Artifact?

Can anyone identify the cause of this black circle artifact? It is small 
black circles that look sort of like air bubbles only much too small which 
have been turning up on my immuno's this week. I have changed all solutions 
but still have the problem. Our lab uses toluene instead of xylenes, I am=20
wondering if that is the problem. Also I use Tween-20 in my citrate buffer 
and I wonder if that could be the problem. At any rate I will be checking=20
both of these but if anyone can help It will be appreciated immensely. I 
have sent a photograph of the artifact to the the list serv image archive=20
(see link below) under the filename "artifact.jpg".

Thanks again,

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