RE: double IHC/in situ #2

From:klosen@neurochem.u-strasbg.fr (Paul Klosen)

>Paul,
>We are trying to establish IHC/ISH procedure in our lab, and it looks like
>when I do antigen retrieval, the ISH probes tend to bind non-specifically.
>What is the sequence of your work? when do you perform the retrieval step?
>It would be great if you could e-mail your protocol for the pituitary
>hormones.
>Thanks a lot in advance,
>Anna
>
>Anna Logvinova, M.D.
>Morphology Core Supervisor
>Buck Institute
>8001 Redwood Blvd
>Novato, CA 94948
>www.buckinstitute.org


I forgot to mention that we tried a pretreatment technique for ISH
published in JHC (don't remember the ref though) which called on a
microwave treatment instead of proteinase K treatment. This technique did
not improe our ISH signals but did clearly cause non-spcific binding of all
of our probes to the tissue, and this whether used on paraffin, PEG or
cryosections.

Paul

                          -=-
                         (o -) O
=====================oOo==(_)==OOo========================================
Paul Klosen, PhD
CNRS UMR 7518 Neurobiologie des Fonctions Rythmiques et Saisonnieres
Universite Louis Pasteur
12 rue de l'Universite
F-67000 Strasbourg, FRANCE
tel: 03.88.35.85.04    fax: 03.88.24.04.61
===============klosen@neurochem.u-strasbg.fr==============================





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