Larry A. Woody in Seattle WA asks: >>Does anyone out there know what
the material is that is used to make cell buttons in cytology and
where to order it?<<

I suppose you're referring to the embedding gel for cytology cell
blocks (often done with pleural and peritoneal fluids). It goes by the
trade name of HistoGel. I think it's made by whatever Thermo is called
this week. There's a considerable amount of information about it in
the Histonet archives - check Google.

An alternative is 3% agar, such as tubed TSB (trypticase soy broth) if
they still make that. I don't have a lot of experience with either of
these materials. I have no commercial connection with any of these
products.

Bob Richmond
Samurai Pathologist
Knoxville TN

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