If you are not getting good immuno results with formalin fixatives you 
could try:

1. heat-induced antigen retrieval of your formalin fixed tissues.
2. Fixing in formalin for 4 hours instead of a longer time.
3. Fixing in a fixative that does not cross-link proteins (formalin is a 
cross-linker) such as Carnoy, methacarn or alcohol with some acetic acid 
added.

I would try the above first. Bear in mind that different antigens have 
different fixative requirements for good immunoreactivity.

Geoff

wasielewski.reinhard.von@mh-hannover.de wrote:

>Hi Histonetters,
>We are looking for the most convenient and morpholgical satisfying fixative for 
>mouse and rat tissue beside formaldehyde. We want to stain a wide range of 
>different immunomarkers but don' t like formalin (therefore) too much. Frozen 
>sections are too bad in morphology.
>Please send me any suggestions !
>
>Many thanks in advance,
>Reinhard.
>
> 
>
>PD Dr. med. Reinhard von Wasielewski
>
>
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>Histonet mailing list
>Histonet@lists.utsouthwestern.edu
>http://lists.utsouthwestern.edu/mailman/listinfo/histonet
>
>  
>

-- 
--
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Geoff McAuliffe, Ph.D.
Neuroscience and Cell Biology
Robert Wood Johnson Medical School
675 Hoes Lane, Piscataway, NJ 08854
voice: (732)-235-4583; fax: -4029 
mcauliff@umdnj.edu
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