To clarify Peggy Wenk's comments, when you do the methenamine silver procedure, it is like a GMS but WITHOUT the oxidation.
Go straight from deionized into the heated silver solution, and monitor it microscopically. A positive control is good to have!

Our pathologists talk about positive and negative birefrigence of uric acid when looking at the H&E section with polarizing microscopy, but I can never get it straight in my mind!

Mike Titford
USA Pathology
Mobile AL USA

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