I use Histology Control Systems, Inc for Pneumocystis controls. 1-800-253-2768 or www.HistologyControlSystems.com
Also, thanks to everyone who gave me advice on the Bielschowsky stain. One drop of concentrated Hydrochloric acid did NOT yield a positive result. You really do need the ONE drop of concentrated Nitric Acid for the stain to work properly.
Jennifer Johnson, HTL (ASCP)
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