gwin,
Not sure why you are usng either of these fixatives if you are interesed in
ultrastructure. would recommend Karnovsky's fixative with post osmication.
Barry

Gwin Kerce wrote:

> Our lab is working on a project that involves locating calcium deposits
> in avian testis.  We have tried to use Bouin's Solution, unfortunately,
> it dissolves the deposits of interest.  We also tried 10% Buffered
> Foramlin, however, the ultrastructure was not preserved.  Does anyone
> have any suggestions for a fixative?  We need to fix both the testicular
> and epididmyal tissue.