I didn't know the reason, but I can second Mark's statement on a shortage 
of hematoxylin.  The price per Kg of bulk has doubled...if you can get it 
at all!

Mark Frei   MT(ASCP)
Product Management
Sigma-Aldrich Corporation
3050 Spruce Street
St. Louis, MO  63103
(314) 286-8080

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