[Histonet] tissues in cleaning cycle

Wed Sep 6 11:14:15 CDT 2006

I agree. The cleaning cycle brings the tissue back to alcohol. The tissue would need to be reprocessed.  We use the cleaning cycle to rehydrate poorly fixed specimens from paraffin back to alcohol.  This is a process I learned here that works well.  Pat

Pat Karlisch
Supervisor, Histology, Pathology and Laboratory Medicine
Penn State Milton S. Hershey Medical Center
Mail Code H179
Hershey, PA 17033
Phone (717) 531-6072
Fax: (717) 531- 7741
email: pkarlisch <@t> psu.edu

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>>> "Anne Van Binsbergen" <vanann702 <@t> skmc.gov.ae> 9/6/2006 9:28 AM >>>

I totally disagree- my vip5's cleaning cycle does xylene then absolute and then has a water wash cycle. If I left a block in my wash cycle it would end up in water so I would certainly reprocess it from at least the 95% station!! If I put it straight into the xylene I would put water into my xylene!!!
Just my 5cents worth here in the desert
Annie

-----Original Message-----
From: histonet-bounces <@t> lists.utsouthwestern.edu [mailto:histonet-bounces <@t> lists.utsouthwestern.edu] On Behalf Of Rene J Buesa
Sent: 06 September 2006 17:01
To: Till, Renee; histonet <@t> lists.utsouthwestern.edu
Subject: Re: [Histonet] tissues in cleaning cycle

Renée:
  A tissue left in the cleaning cycle is one that is already dehydrated and in the "antemedium" (xylene if that is what you use). That is "normal procedure" if you want to "reinfiltrate" the tissue, so your next step would be to put it BRIEFLY in clean xylene and transfer it to be infiltrated with paraffin.
  Very likely tat your tissue can be put in the last xylene station and through the paraffin stations.
  René J.

"Till, Renee" <TillRenee <@t> uams.edu> wrote:
  Hello. Any suggestions on what to do with tissues that were accidentally
left in the processor during the cleaning cycle? I would think they need
to be re-infiltrated with paraffin at the very least. I don't know if
our processor will let us do anything but a full processing run.

Renee' Till, HT

Research Assistant

Arkansas Children's Nutrition Center

1212 Marshall St./N2021

Little Rock, AR 72002

Office (501)364-2785

Fax (501)364-3161

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