Re: wrinkled brains - HELP!
From: | Sarah Christo <schristo@cvm.tamu.edu> |
Dear Andrea,
Yes, you can use a higher temperature waterbath to get the wrinkles out. I sometimes have to crank it up to were the paraffin is almost melting. I like to embed with a softer paraffin also. I use a mixture of Peel-a-way and Surgipath's embedding paraffin. Hope this helps. Sarah
Sarah Christo, HT (ASCP)
Research Associate, Histology Lab
Texas A&M University
College of Veterinary Medicine
Dept. of Vet Anatomy & Public Health
College Station, TX 77843-4458
phone: (979) 845-3177
fax: (979) 458-3499
>>> Andrea Grantham <algranth@u.arizona.edu> 10/19/00 09:25AM >>>
I've been trying to get decent 10 micron sections of rat brains and the
cutting is great but the brain tissue puckers when it hits the waterbath
and I can't get a flat section on the slide.
The brain was perfused (not by me so this is a guess) with
paraformaldehyde, stored in 0.1M phosphate/4% paraformaldehyde before it
was brought to the lab.
I processed it on my little old rotary processor - one hour for each
station beginning with 70% ETOH. I allowed extra time for infiltration
since it was a thicker piece of tissue. I use paraplast xtra. This is the
paraffin that I use routinely in the lab for all types of tissue.
Waterbath temp is 42 degrees. I use DI water and I even tried putting in a
small amount of alcohol in the waterbath.
Any suggestions for flat sections? Should I raise the temp in the waterbath
- I don't want the tissue to expand so fast that it "blows up".
At this point can the brains be re-infiltrated with a different type of
paraffin? I'm thinking of a softer type.
Thanks!
Andi
.....................................................................
: Andrea Grantham, HT(ASCP) Dept. of Cell Biology & Anatomy :
: Sr. Research Specialist University of Arizona :
: (office: AHSC 4212) P.O. Box 245044 :
: (voice: 520-626-4415) Tucson, AZ 85724-5044 USA :
: (FAX: 520-626-2097) (email: algranth@u.arizona.edu) :
:...................................................................:
http://www.cba.arizona.edu/histology-lab.html
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