[Histonet] Dako Omnis

2013-11-25 Thread Michael Farmer
May I ask please, has anyone heard how many Dako Omnis systems are out there? And where? Who are these brave early adaptors? Thanks, Michael Farmer McEvoy & Farmer Pathology NY, NY ___ Histonet mailing list Histonet@lists.utsouthwestern.edu http

Re: [Histonet] Reagent change on tissue processors

2013-11-25 Thread Jay Lundgren
For registry quality slides, rotate everything except paraffin every 200 blocks (basically every day unless you do tiny runs). Rotate paraffin weekly, sooner if it starts smelling strongly of clearant. But then, I'm conservative, and I was trained where reagents were free.

[Histonet] Reagent change on tissue processors

2013-11-25 Thread Vickroy, Jim
In the past we had a fewer number of processors and fewer variables so we based changing our chemicals on the day of the week. Now since we have more machines for better workflow purposes we believe changing should be based on number of cassettes run through each machine. Of course then we

[Histonet] RE: Trouble with IHC

2013-11-25 Thread Teri Johnson
Hi Patrick, It sounds as though you have a lot going on. It's important to gauge whether your frozen sections are moth-eaten due to trimming/facing the tissue too aggressively and tearing chunks of tissue out, if it's freezing artifact, or if your sample is too cold and you are getting chatter

AW: [Histonet] Over fixation

2013-11-25 Thread Gudrun Lang
Formaldehyd binds as methylol-group to basic functional groups on proteins. The longer the fixation the longer the possibility to bind. The same basic groups bind acid dyes like eosin. On the other side leads acidic formalin to degradation of DNA. This can lead to lower affinity of hematoxylin. So

[Histonet] Issue with Henry's Wonder Wax Enhanced

2013-11-25 Thread Sandra Cheasty
Hello fellow Techs, Has anyone noticed a change in the Henry's Wonder Wax, Enhanced? (Used for embedding, not infiltrating.) We have noticed that it is a lot "stickier" when we are sectioning. (To our picks, forceps, and fingers.) We have checked our temperatures, and all is wel