On Mon, 19 May 1997, Kathryn Evans wrote:

> In photographing cross sections of grass stems, the photographer is
> having trouble getting a perfectly flat cut so that there is no
> distortion in terms of depth of field. Under the 'scope any varience
> registers in terms of focus. Does anyone know of a good way to
> get a perfectly flat cut. I
> wondered about freezing it and doing a frozen
> section?
> Kathy Evans

Many years ago, in college Histology (study of tissues) class, we used to
remove the organ from the animal, freeze it, then use some kind of
specialized instrument that sliced very very thin slices to make slides.
Its been so long that I can't remember it and they probably have better
methods now. I recommend checking with the Biology department of a nearby
college or Pathology department of a hospital lab to see if they could
help.