[Histonet] Ovary fixation
Rene J Buesa
rjbuesa <@t> yahoo.com
Tue Feb 6 14:38:00 CST 2007
Try infiltration with a mixture of ethanol (E) + isopropanol (I) + mineral oil (M) at:
E:I:M (2:3:1) at 45ºC for 1.50 hours followed by E:I:M (1:3:2) at 50ºC for 1.25h
Complete with 4 paraffin baths at 58ºC of 0.75, 0.30, 0.30 and 0.50 h
No xylene or substitutes are needed. More gentler and better infiltration is obtained.
Heidi Miers <Heidi.Miers <@t> NAU.EDU> wrote:
I section dog and cat ovaries on a regular basis and am unhappy with the
quality of the follicles. The primordial follicles are found near the surface
and when I look at them under the microscope they all look like they have
vacuoles in the oocytes. Some ovaries come out looking OK. I am wondering if
anyone has suggestions. Could it be fixation? We use 10% formalin for at least
3 days. How about processing? Could it be that the xylene substitute I use
isn't clearing to allow proper paraffin infiltration?
Also, for those who use a regressive H&E-what type of eosin and for how long
to you let it stain?
Research Specialist, Sr.
Imaging and Histology Core Facility
Northern Arizona University
Heidi.Miers <@t> nau.edu
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