Hi,
    Try Nile Green, I think it is available from CMS. The green really stands
out in a block.
Amos Brooks

"Wilhelms, Margaret B" wrote:

> I would like to know if anyone uses a dye or ink to mark certain structures
> at trimming that will stay in place and be visible after processing (at
> cutting).  I am trimming primate eyes and would like to mark the macula (and
> fovea) or the outside of the eye where the macula is so that it would be
> easier to obtain at cutting.  I think I need a color other than black.  Can
> anyone suggest anything?  Does anyone know of a dye or ink that can be
> applied after processing just prior to embedding?  Thanks in advance for
> your help.
>
> Meg