[Histonet] DRGs

[Amy Porter]

I think it is strange that we are all doing similar techniques and wind up
with different outcomes using the histogel.  I would be curious how many of
us are using the equipment sold with the histogel for warming and cooling
opposed to any of us who don't.  we did not purchase the equipment and I
wonder sometimes if warming the histogel using other means causes some type
of breakdown / and do any of you repeatedly reheat the same tube once it has
been warmed and resolidified??

-----Original Message-----
From: histonet-bounces <@t> lists.utsouthwestern.edu
[mailto:histonet-bounces <@t> lists.utsouthwestern.edu] On Behalf Of Andrea
Grantham
Sent: Monday, February 22, 2010 9:41 AM
To: HISTONET
Subject: Re: [Histonet] DRGs
Importance: High

Hi Carol,
I have used histogel for these kinds of samples and also other small,  
thin tissues like insect antennae and insect GI tracts and midguts.  
Since I get all my projects already fixed in whatever fixative the  
investigator chooses, rinsed and placed in 70% ETOH the histogel never  
touches formalin. I don't use formalin on my processor but start in  
70%. I've never had a problem with the histogel. We just put the  
sample in the histogel flat and stand it up (turn 90°) when embedding  
in paraffin. I use tissue prep for embedding.
If you don't want to use histogel you could try to put the drg's on GN  
Metricel membrane disc filters. We do this with a lot of the samples I  
receive, actually I have the investigators or their techs do this. The  
tissue sticks to the membrane and orientation is a dream. The membrane  
presents no problem when sectioning. You can get it from VWR.

Andi



Andrea Grantham, HT (ASCP)
Senior Research Specialist
University of Arizona
Cell Biology and Anatomy
Histology Service Laboratory
P.O.Box 245044
Tucson, AZ 85724

algranth <@t> email.arizona.edu
Tel: 520.626.4415     Fax: 520.626.2097

"happy slicing and dicing and may all your stains work perfectly" -  
Paula Sicurello
P Please consider the environment before printing this email.




On Feb 18, 2010, at 11:23 AM, Barone, Carol wrote:

> Histonetter's...we received a "boat-load" of mouse DRGs that had been
> prepared in histogel and are cutting...well..not so good.
> We normally do DRGs from FS and get beautiful results.
>
> We have used histogel before with other small sample and have never  
> had
> issues...  not sure if it is the Histogel or DRG's (fixed in 10% NBF  
> and
> then transferred to 70% before placed into the histogel).is the  
> issue..I
> seem to remember that histogel requires formalin and wonder if the
> transfer to 70% is causing our problem ...but, obviously there is not
> much room for error with such tiny- tiny samples and they are already
> process and in paraffin?
>
> I am not quite sure how twe can improve the ones that came in  
> histogel,
> and were processed to paraffin a paraffin block....any idea's? any
> experience? any anything? Thx- ASAP!
>
> cbarone <@t> nemours.org
> _______________________________________________
> Histonet mailing list
> Histonet <@t> lists.utsouthwestern.edu
> http://lists.utsouthwestern.edu/mailman/listinfo/histonet
>

_______________________________________________
Histonet mailing list
Histonet <@t> lists.utsouthwestern.edu
http://lists.utsouthwestern.edu/mailman/listinfo/histonet