[Histonet] tissue highlighting for embedding/cutting

[j k]

Sorry I missed this when it came up recently.
What do people use to highlight tissue to assist in the embedding and
cutting process?
What to add to formalin bath? Eosin? Safranin O? Others?
Do these affect the H&E staining quality in any way? Do these affect
immunoperoxidase staining? Do these gunk up the innards of the tissue
processor in any way?
jim keller