Dear Tony  I have read a few replys to your problem I would just like to
ask how long have they been frozen ...May a degree of freeze drying be
going on? changing the angle of the knife may well help too? I take it
that the oct surround is cutting well?  Good Luck....Mary

On Wed, 8 Mar 2000, tony.whyte wrote:

> Hi all,
> 
> i'm having trouble sectioning whole frozen mouse embryos.  They were snap
> frozen in isopentane in liq N2 and mounted in OCT on cork.  The trouble is
> either that the section is compressing or else fragmenting.  Using a new knife
> hasn't helped the problem.  Any ideas?
> 
> Tony W.
> Cambridge
> 
>