[Histonet] Rookie's manual-prep/H&E protocol
Jack England
joeamateur <@t> hotmail.com
Tue Dec 9 17:34:20 CST 2003
Hi Majid,
Here's our protocol:
Fix: Place tissue in 1xDPBS for a few hours at 4 degrees C.
(From what I've read, I'm wary of how well this works, so advice would be
welcomed
...I prefer 70%EtOH overnight)
Dehydrate:
70% EtOH --1hr
95% EtOh --1hr
95% EtOh --1hr
3x 100% EtOH--1 hr each
Clear: Xylene overnight
Infiltration:
3 x TBS paraffin, 1 hour each at atmospheric pressure (this is one part I'm
trying to refine)
Embed, and allow to harden overnight.
Section at 7um and apply to slides; allow to dry overnight on slide warmer.
Rehydrate:
Xylene 1: 3 min
Xylene 2: 2 min
Xylene/100%EtOH: 2 min
100% EtOH: 2 min
95% EtOH: 2 min
80% EtOH: 1 min
70% EtOH: 1 min
50% EtOH: 1 min
di water: 3 min (per another thread, I consider water deionized at or
above 18 megaohm-cm)
Stain in Gill's Hematoxylin 2 for 2-4 min (we're still working on optimizing
this one)
Rinse:
Running tap water: 1 min
Tap water: 1 min
di water: 3-5 min
Counterstain in eosin (2.5%--5% diluted 1:2) with a quick dip.
Dehydration:
95% EtOH: 2 min
95% EtOH: 2 min
100% EtOH: 2 min
Xylene/100%EtOH: 2 min
Xylene 2: 2 min
Xylene 1: 3 min
Apply mounting media to slide and cover. Let dry in fume hood for a few
minutes before examining.
Hope this helps!
--Regards,
Jack England
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