[Histonet] Losing sections.

Rene J Buesa rjbuesa <@t> yahoo.com
Thu Sep 27 11:08:10 CDT 2007

Ttry it again after eliminating the nitric acid (not really needed).
René J.

Alicia Sedo <medase <@t> leeds.ac.uk> wrote:  

Hello Histonet,

I've been trying a Van Gieson stain on cryosections of mouse cardiac tissues,
that have previously been stained for lacZ expression and are sitting in 4% PBS

I have been losing the sections from the slides at the Van Gieson solution step.
I am omitting the nuclear stain, instead going from washing in tap water to
rinsing in distilled, then into the Van Gieson.
I got the protocol (Staining of Collagen- on Frozen sections) from Histonet.
The stain is 0.5% Aqueous Acid Fuchsin-15ml, Saturated Picric Acid-75ml,
Distilled water-50ml...with 250microlitres of concentrated Nitric acid, which
was recommended to sharpen the differentiation of the colours.

The sections lift off and curl up after a few seconds, the slides are homemade
silane coated and have withstood all other procedures so far. I have tried the
stain without the Nitric acid but it still happens. I have previously tried
this Van Gieson on FFPE cardiac tissue on the same slides, with good results.

Am I missing something obvious that I don't know about? I am not a Histologist
only a researcher in an University lab. I hope someone out there can point out
what I am doing wrong!

Alicia Sedo.

Cardiovascular Research
Level 11 Worsley Building,
Clarendon Way
University of Leeds.

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