Interferons (IFs) and interleukins (ILs) are immune system biochemicals at the intersection of basic research and medical technology. Part of the class of secreted cellular regulators known as cytokines, IFs and ILs have experienced dizzying public relations ups and downs, hailed one season as tomorrow's wonder drugs, derided the next as toxic side effects emerge during therapy.

With many questions about the basic biology of these enigmatic immunochemicals still to be answered, suppliers--some of whom are listed below--are likely to have a ready research market.

10933 N. Torrey Pines Rd.
La Jolla, Calif. 92037
(800) 854-3417
Fax: (800) 776-0999

Cellular Products Inc.
872 Main St.
Buffalo, N.Y. 14202
(800) CPI-KITS
Fax: (716) 882-0959

Cetus Oncology Corp.
4560 Horton St.
Emeryville, Calif. 94608
(800) 238-8779

Genzyme Corp.
One Kendall Square
Cambridge, Mass. 02139
(800) 332-1042
Fax: (617) 252-7700

R&D Systems Inc.
614 McKinley Place, N.E.
Minneapolis, Minn. 55413...

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