Besides Genzyme, we know of two other companies with kits for
Murine IL-1B: Perseptive Diagnostics 800-343-1346 and Biosource
Int'l. 800-242-0607. We can't vouch for quality, though. Good
Luck! Regards, Linscott's.
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Linscott's Directory of Immunological & Biological Reagents
4877 Grange Rd.
Santa Rosa CA 95404
707-544-9555