Debbie Siena asks where to purchase Thioflavine S:

We purchase ours from Cellpoint Scientific. They represent the German firm Chroma. They are not certified by the Biological Stain Commission, but the dyes are very good.

Cat # 1B265
Cost about $20 for 25 grams
From: Cellpoint Scientific
      200 Girard Street
      Building 207
      Gaithersburg  MD  20877
      (800) 999 9734
If you can FAX an order to them, you avoid the $100 minimium charge.

Mike Titford
USA Pathology
Mobile AL 36617 USA