amplification kit

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From:Klazien Bosch <> (by way of histonet)
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I have a question about the DAKO Catalyzed Signal Amplification System,
Peroxidase. I 've tried to use it on frozen sections, but whatever I do
there is a tremendous background staining. Even in the control sections
(=negative control reagent instead of primary antibody) everything is
stained. The sections are fixed in formalin and I 've done biotin and
peroxidase blocking. For wash buffer I 've used PBS + 0.1% Tween 20. I want
to use the kit for antibodies that work well on frozen sections (most of
the time rat liver sections), but are a little bit faint. Is it possible to
use it on frozen sections or is the kit only for paraffin sections? Thanks!

Klazien Bosch
Cell Biology and Histolgy
Academic Medical Center
The Netherlands

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